Nestled in the heart of the Valais canton, Sion is a treasure trove of history, culture, and natural beauty, making it a must-visit destination in Switzerland.
Did you know that Sion is the sunniest city in Switzerland? With over 300 days of sunshine a year, it’s the perfect place to soak up the Alpine scenery and enjoy a wide range of experiences.
From exploring medieval castles to wandering through the charming old town, Sion offers a unique blend of history, culture, and outdoor adventures, making it worth a visit. In this guide, we’ll provide you with practical information to plan your trip and make the most of your time in this picturesque Swiss destination.
Discovering Sion: Switzerland’s Sunniest City
Nestled in the heart of the Rhône Valley, Sion is a treasure trove of history, culture, and natural beauty. As the capital of the Valais canton, this charming city is known for its picturesque old town and majestic castle hills.
Begin your exploration tour at the Mont d’Orge lake, where you can enjoy breathtaking views over Sion, with its fan-shaped old town and unmistakable castle hills. The settlement history dating back 7,000 years is a testament to Sion’s significance as Switzerland’s oldest city.
Sion holds the distinction of being Switzerland’s sunniest city, enjoying more days of sunshine than any other place in the country. This makes it a delightful destination year-round. As you wander through the region, you’ll discover that Sion serves as the economic and cultural center, known for its vineyards, mountains, and rich traditions.
- The city’s unique geography places it in the heart of the Rhône Valley, surrounded by the magnificent Swiss Alps.
- The century-old Tourbillon and Valère castles are the city’s most recognizable features, dominating the skyline since the 13th century.
- Sion’s strategic location makes it an ideal base for exploring the wider Valais region, with excellent transportation connections.
At any given time, Sion is a place where tradition meets modernity. The city’s name, derived from the Celtic word “Sedunum,” refers to a place on the hill, perfectly describing Sion’s dramatic setting between its castle-topped hills.
As you explore Sion, you’ll find that its rich history and cultural heritage are woven into the fabric of everyday life. From the charming streets of the old town to the majestic castles, Sion is a city that will captivate you with its beauty and charm.
When to Visit Sion and Travel Tips
Sion, known for its exceptional weather year-round, is a destination that offers unique experiences in every season. As one of Switzerland’s driest and sunniest cities, Sion enjoys a climate that makes it an attractive visit destination at any time of the year.
The city’s climate varies across seasons, each offering distinct activities and experiences. In the spring (March to May), Sion comes alive with pleasant temperatures ranging from 53°F to 72°F, making it an ideal time for hiking and exploring the Valais region as nature awakens with blooming flowers and greenery.
Summer (June to August) is the peak tourist season, with temperatures between 55°F and 81°F, perfect for wine tasting in the vineyards. However, it’s advisable to book your accommodations well in advance to secure the best rates. In contrast, fall (September to November) offers more affordable prices and fewer crowds, with temperatures from 33°F to 75°F, along with spectacular autumn foliage throughout the region.
If you’re planning a trip to Sion, consider the experience you want. For skiing, winter (December to February) is ideal, with cooler temperatures ranging from 40°F to 53°F, making nearby ski resorts a great option.
- Sion’s exceptional weather makes it a great destination year-round.
- Spring is perfect for hiking and exploring.
- Summer is ideal for wine tasting.
- Fall offers fewer crowds and lower prices.
- Winter is great for skiing at nearby resorts.
Throughout the city, you’ll find amenities like free WiFi spots, clean public toilets, and water fountains where you can refill your bottle. For travel convenience, consider purchasing a Swiss Travel Pass for unlimited travel and discounts on mountain excursions.
Where to Stay in Sion
When planning your trip to Sion, choosing the right place to stay is crucial for a memorable experience. Sion offers a variety of accommodations to suit different budgets and preferences, ensuring that you’ll have a great time exploring this charming Swiss city.
For budget travelers, Ibis Sion is an excellent option, offering comfortable rooms with artistic designs and a continental breakfast buffet that you can enjoy while taking in some of Switzerland’s most impressive mountain views. If you’re looking for a more modern experience, Moxy Sion features contemporary design with neutral tones accented by bright colors, plus perks like complimentary welcome drinks, game rooms, and bicycle rentals for exploring the city.
Staying in Sion’s central area puts you within walking distance of the old town, major attractions, and a variety of restaurants, allowing you to make the most of your time in the city. When booking accommodations in Sion, keep in mind that summer is the busiest season, so you’ll want to reserve your room well in advance to secure the best rates and availability.
Many hotels in Sion provide guests with the Carte d’Hôte (guest card), which offers advantages such as free city bus travel and complimentary admission to thermal baths, adding significant value to your stay. With a lot of options available, you’ll be able to find the perfect accommodation to suit your needs. For those traveling by campervan or looking for a unique experience, there are also camping options in the surrounding area, though these may require a bit more planning and research.
By choosing the right accommodation, you’ll be able to enhance your overall experience of Sion, making your trip even more enjoyable. Be sure to research and book your preferred place to stay in advance to ensure a smooth and memorable trip.
Exploring Tourbillon Castle
Perched atop one of Sion’s iconic hills, Tourbillon Castle is a must-visit attraction. This castle stands as a testament to the region’s rich history, dating back to shortly before the year 1300 when Bishop Boniface de Challant commissioned its construction.
The castle’s history is marked by significant events over the century. Initially completed by its successors, the castle’s frescos in the Saint-Georges and Saint-Grat Chapel date back to the second quarter of the 14th century. These frescos were only recently restored to their visible state, offering a glimpse into the past.
Tourbillon Castle has experienced a tumultuous history, including being set ablaze in 1417. After restoration, it became the summer residence of the bishop. However, it lost importance in the 18th century when another fire ruined much of the structure. Despite this, the chapel and defensive walls remain well-preserved, giving visitors a glimpse into medieval military architecture.
The hike up to Tourbillon Castle takes about 20-30 minutes from Sion’s old town, requiring some effort but rewarding you with breathtaking panoramic views of Sion, the Rhône Valley, and the surrounding Alps. This makes it a worthwhile visit, especially considering the time you’ll spend exploring the castle and its surroundings.
Admission to Tourbillon Castle is free, making it one of the most accessible historical attractions in Sion. Visitors can explore the ruins and appreciate the strategic significance of this place in the years gone by.
As you explore Tourbillon Castle, you’ll uncover its fascinating history that spans many years. The castle’s presence is a reminder of Sion’s rich cultural heritage, making it an unmissable part of your visit to this charming Swiss town.
Valère Castle and Basilica
As you explore Sion, you’ll discover Valère Castle, a historical gem that has been a part of the city’s landscape since the 1100s. This fortified church, also known as Valère Basilica, is a significant landmark that reflects the city’s rich history. Perched on a hill opposite Tourbillon Castle, Valère Castle is remarkably well-preserved and features a fascinating blend of Romanesque and Gothic architectural styles.
One of the castle’s most extraordinary treasures is its organ, recognized as one of the oldest functioning organs in the world, dating back to approximately 1435. This historical instrument is not only a marvel of medieval engineering but also still occasionally used for special concerts, adding to the castle’s allure.
Inside the fortified basilica, you’ll discover beautiful frescos, ornate choir stalls, and a rich collection of religious artifacts that highlight the importance of this ecclesiastical stronghold throughout history. The Valais History Museum housed within the castle complex showcases over 1,000 objects spanning from the Paleolithic age to the Industrial Revolution, offering visitors a comprehensive overview of the region’s cultural development.
The museum’s collection includes ancient tools, medieval weapons, religious artifacts, traditional costumes, and everyday items that tell the story of life in Valais throughout different historical periods. As part of Sion’s cultural heritage, Valère Castle is a must-visit destination for anyone interested in history, architecture, or simply experiencing the beauty of this century-old landmark.
From the castle grounds, you can enjoy some of the most spectacular views of Sion, the Rhône Valley, and the surrounding Alpine landscape, making it not only a cultural destination but also a prime photography spot. Whether you’re a history buff, an architecture enthusiast, or just looking for a unique experience, Valère Castle is an unforgettable part of any visit to Sion.
Wandering Through Sion’s Charming Old Town
As you step into Sion’s Old Town, you’ll discover a treasure trove of historical landmarks and cultural attractions. The historic center is a delightful maze of winding cobblestone streets, colorful historic buildings, and hidden squares that invite you to wander and discover the city’s rich history at your own pace.
The traffic-free Grand Rue du Pont serves as the main artery of the old town, lined with local shops, cafés, and boutiques where you can find authentic Swiss products and souvenirs while enjoying the pedestrian-friendly atmosphere. On Fridays, the old town comes alive with a farmer’s market, offering a bounty of local produce, from fresh fruits and vegetables to artisanal cheeses and freshly baked goods that showcase the region’s culinary heritage.
As you stroll through the historic center, you’ll encounter architectural gems like the Witches’ Tower (Tour des Sorciers), a 15th-century defensive structure that once served as a prison for those accused of witchcraft. The old town is also home to several museums worth exploring, including the Valais Nature Museum with its impressive display of over 8,000 animals and exhibits dating back to the Mesolithic age, and the Valais Art Museum featuring works by renowned artists like Marina Abramovic and Oskar Kokoschka.
From the old town, picturesque pathways lead uphill to Sion’s iconic landmarks – the ruins of Tourbillon Castle and the fortified Valeria Castle Church – making it the perfect starting point for exploring the city’s most famous attractions. Take your time wandering through this historic district, as around every corner you’ll find charming details like flower-adorned fountains, hidden courtyards, and buildings with stories dating back hundreds of years that bring Sion’s past to life.
The historic buildings and colorful streets make Sion’s Old Town a unique place to visit. You can spend a significant amount of time exploring the area, taking in the history and culture that permeates every corner. Whether you’re interested in history, art, or simply enjoying a leisurely walk through a beautiful town, Sion’s Old Town has something to offer.
Cathédrale Notre-Dame du Glarier
With roots dating back to the 7th century, the Cathédrale Notre-Dame du Glarier is a historical gem in Sion, Switzerland. This exquisite church has witnessed the passage of time and has been a silent observer to the city’s evolution.
The cathedral’s history is fascinating, with layers of the past visible beneath your feet. The original church was destroyed by fire in 1010, and the ruins are still visible on the lowest floor, offering a glimpse into the building’s past.
After the fire, the cathedral was rebuilt in the Romanesque style, with the western bell tower dating back to the 12th century serving as a prime example of this architectural period. Between the 15th and 16th centuries, the cathedral underwent another major renovation, incorporating the more ornate Gothic style.
As you walk through the cathedral, you’ll be captivated by the exquisite details, including vibrant stained-glass windows, intricate wall frescoes depicting biblical scenes, and an impressive altar adorned with gold detailing. The cathedral’s central location in Sion’s old town makes it an easy addition to your walking tour of the city.
Take your time to appreciate both the architectural elements and the peaceful atmosphere inside this historic place of worship, which continues to serve as an active parish church for the local community.
The Cathédrale Notre-Dame du Glarier stands as one of the city‘s most significant religious landmarks, with a history stretching back to the 7th century. Its tall spire serves as a helpful landmark for navigation as you explore the surrounding streets.
Place Maurice Zermatten: A Picturesque Square
As you explore Sion, you’ll discover Place Maurice Zermatten, a quaint square that showcases the city’s unique blend of natural landscapes and urban elements. This charming square is nestled at the foot of Sion’s iconic Valère and Tourbillon hills, offering visitors a perfect spot to rest and take in the magnificent views.
The square is named in honor of Maurice Zermatten, a prolific French writer who published an impressive 120 books during his lifetime. Maurice Zermatten maintained strong ties to Sion, where he lectured at the College of Sion until his retirement, earning him great respect from the town.
Place Maurice Zermatten serves as a beautiful illustration of how Sion harmoniously blends natural beauty with urban charm, creating a magical atmosphere that captures the essence of the city. The square features several water fountains where you can refill your water bottle for free, a common and environmentally friendly practice throughout Sion.
As you relax in Place Maurice Zermatten, you’ll appreciate the convenient amenities, including free WiFi and clean public toilets, making it an ideal starting point for your walk through town. The square’s strategic location makes it a natural meeting point and a perfect place to orient yourself before heading up to explore either of the castle hills or venturing into the old town’s narrow streets.
Amenities | Description |
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Free WiFi | Sion has more public WiFi spots than most other Swiss cities, making it easy to stay connected. |
Water Fountains | Refill your water bottle for free at the several water fountains in the square. |
Public Toilets | Clean and accessible public toilets are available in the square and throughout the old town. |
During summer months, Place Maurice Zermatten often hosts small events and becomes a gathering place for locals and visitors alike, giving you an opportunity to experience authentic local culture while enjoying the beautiful surroundings. It’s a great place to walk around, take in the views, and feel the community spirit.
Exploring Europe’s Largest Underground Lake: Lac Souterrain
Discover the natural wonder of Lac Souterrain, Europe’s largest underground lake, nestled in the heart of Switzerland. Located just a short drive from Sion in the nearby town of St-Leonard, this incredible underground lake is a must-visit attraction for anyone traveling to the region.
Lac Souterrain stretches over 984 feet with an area of roughly 65,000 square feet, making it a truly impressive lake. The lake’s unique formation is a result of groundwater slowly dissolving the Triassic gypsum rock over millions of years, creating a vivid blue and incredibly still body of water that stays at a constant temperature of 52°F.
Visitors can explore this underground lake on a guided tour that lasts approximately 30 minutes. During the tour, you’ll glide across the crystal-clear water and enjoy the peace of this amazing place while your guide shares fascinating information about the lake’s geological formation, history, and unique ecosystem.
One of the highlights of visiting Lac Souterrain is the opportunity to see trout and bats living in the cave. The acoustics inside the cave create an almost magical atmosphere, with the gentle sounds of water droplets echoing off the stone walls and ceiling.
Lac Souterrain is open seasonally from March 18 to November 1. Admission costs 12 CHF for adults (16 and older), 7 CHF for children (5 to 15), and is free for children under 5 years old. This extraordinary natural phenomenon ranks among the most memorable experiences in the Valais region and offers a welcome respite from the summer heat.
As you explore this mysterious world, you’ll be struck by the natural beauty and uniqueness of Lac Souterrain. Be sure to bring a light jacket, as the cave maintains its cool temperature regardless of the weather outside.
Domaines des Iles: Adventure and Relaxation
Just a short drive from Sion’s city center, Domaines des Iles is a haven for those seeking adventure and relaxation amidst nature. This expansive recreational area spans over 54 hectares along the banks of the Rhône River, offering a unique blend of activities and serene landscapes.
The park is a perfect destination for families and thrill-seekers alike. You can enjoy swimming in one of the two beautiful lakes, making it an ideal spot to cool off during the hot summer months. For those looking for more adventure, the climbing wall in summer and cross-country skiing tracks in winter provide exciting options.
Domaines des Iles is not just an adventure park; it’s also a lovely place to relax. The spacious green areas are perfect for picnicking, playing games, or simply enjoying the views of the surrounding mountains. The park’s accessibility, with free parking and public transportation options from Sion’s center, makes it a convenient day-trip destination.
Adjacent to Domaines des Iles is Alaïa Bay, Switzerland’s first artificial wave pool, offering a unique surfing experience in the landlocked country. This addition makes the area an even more attractive destination for water sports enthusiasts.
Whether you’re looking for an active day outdoors or a peaceful retreat in nature, Domaines des Iles provides a welcome change of pace from sightseeing in the city. It showcases another dimension of what the Valais region has to offer, making it a must-visit destination during your stay in Sion.
Wine Tasting in Sion’s Vineyards
As you explore Sion, you’ll discover that it’s situated in the heart of Switzerland’s premier wine-producing region. The unique climate of the Valais canton, with its abundant sunshine and minimal rainfall, creates ideal conditions for cultivating exceptional grapes.
The steep, terraced vineyards that surround Sion are not only visually stunning but also historically significant, having been cultivated since Roman times. These vineyards produce some of Switzerland’s most celebrated wines, including the renowned Fendant variety.
Fendant, also known as Chasselas, is a crisp, refreshing white wine that pairs perfectly with local cheeses. It’s considered the signature wine of the area and is a must-try when visiting Sion. The region’s vineyards are truly remarkable, thanks to the ingenious irrigation system known as “bisses.”
The “bisses” are channels carved into the mountain slopes centuries ago to bring glacier water to the vines in this otherwise dry region. You can explore these historic water channels by following the scenic hiking route along the six bisses in and around Sion.
For the full experience, book a guided wine tour that takes you through the vineyards, explains the unique terroir and growing conditions, and culminates in tastings at local wineries. You’ll have the opportunity to sample a variety of Valais wines beyond just Fendant, learning about the region’s rich wine-making heritage.
Don’t miss the opportunity to visit the “Bisses” museum in nearby Ayent to learn more about these remarkable irrigation systems that have shaped the landscape and made viticulture possible in this mountainous region. By exploring Sion’s vineyards and learning about its wine production, you’ll gain a deeper appreciation for the area’s culture and history.
Walking Along the Rhône River
As you stroll along the Rhône River in Sion, you’ll discover a serene escape that combines natural beauty with rich history. The Rhône is the third longest river in Switzerland and starts at the meltwater of the Rhône Glacier in Valais. From here, it flows through the Swiss Alps, into Lake Geneva, and through southeastern France, eventually reaching the Mediterranean Sea near Arles.
Walking along the Rhône’s banks in Sion offers a peaceful escape from the city center, with well-maintained paths that provide beautiful views of the water and the surrounding Alpine landscape. This river holds immense historical significance as it served as a crucial trade and transportation route since ancient times, used by Greeks and Romans long before the development of railroads and roadways.
The riverside walking route is relatively flat and accessible to all fitness levels, making it an ideal way to experience nature without the exertion required for mountain hikes in the region. Along your walk, you’ll find several restaurants, cafés, and parks where you can stop to rest and refresh, making it easy to turn your riverside stroll into a half-day activity. You can take your time and enjoy the scenery, making the most of your time in Sion.
A walk along the Rhône River is a brilliant way to appreciate the beauty and magnitude of our planet or to decompress after a day spent in museums or castles. The path along the Rhône connects with other walking routes in and around Sion, allowing you to customize your journey based on your interests and the time you have available. A sunset walk along the Rhône is particularly magical, as the fading light reflects off the water and illuminates the surrounding mountains, creating a perfect end to a day of sightseeing in Sion.
Dotted along the Rhône, you’ll find restaurants, parks, and shops, adding to the charm of your walking experience. The river’s rich history and picturesque surroundings make it a unique and memorable experience.
Day Trip to Zermatt and the Matterhorn
Embark on a day trip from Sion to Zermatt, a journey that unfolds through breathtaking Swiss landscapes. Just an hour and a half away, Zermatt is a world-famous destination that sits at the foot of the iconic Matterhorn mountain.
Zermatt is renowned for its skiing in the winter, but it’s also a great destination in the summer for those who enjoy hiking, paragliding, or simply taking in the views from the top of the Gornergrat Bahn cogwheel railway or the Matterhorn Glacier Paradise cable car.
For the best views, take the Gornergrat Bahn train up to 10,285 feet (3,135 meters), where you’ll be rewarded with breathtaking panoramas of the Matterhorn and the surrounding Swiss Alps. Adventure seekers can ride the Matterhorn Glacier Paradise cable car to Europe’s highest cable car station at 12,739 feet (3,883 meters), where you can enjoy skiing even in July and August on the year-round glacier slopes.
To learn about Zermatt’s history, take a guided tour through the old town or visit the Zermatt Museum housed in a restored 16th-century house. This charming car-free village preserves its traditional Alpine character while offering world-class amenities, creating a unique atmosphere that’s both authentic and luxurious.
A day trip from Sion to Zermatt is an absolute must-do experience, with the journey taking just about an hour and a half by train through some of Switzerland’s most spectacular scenery. With the efficient Swiss train system, this makes for a manageable and unforgettable trip to an Alpine paradise.
Without a doubt, Zermatt is a world-class destination that should be on every traveler’s bucket list. So, plan your visit, and get ready to be mesmerized by the beauty of the Matterhorn and the charm of Zermatt.
Best Restaurants in Sion
Sion’s culinary landscape is a perfect blend of traditional Swiss dishes and modern cuisine, all paired with local wines. The city’s restaurants offer an exceptional dining experience that showcases the rich gastronomic heritage of the Valais region.
For an authentic local experience, you should seek out restaurants serving raclette, a famous melted cheese dish that originated in this very region. Often prepared tableside, raclette is scraped directly onto your plate with accompaniments of potatoes, pickles, and dried meats. Many of Sion’s best restaurants feature extensive wine lists highlighting the exceptional local varieties grown in the surrounding vineyards.
Wine lovers will appreciate the knowledgeable staff who can recommend perfect pairings for your meal. The weekly market in Sion is also an excellent place to discover local specialties like Valais apricots, saffron from Mund, and air-dried beef that’s been produced in the region for centuries.
For a special dining experience, look for restaurants with terraces offering views of the castle hills or the vineyards. You can enjoy your meal while taking in Sion’s spectacular scenery. Many restaurants in the old town area occupy historic buildings with atmospheric stone cellars or courtyards, adding a unique ambiance to your dining experience.
Don’t miss the opportunity to try lesser-known regional specialties like cholera, a savory pie with potatoes, apples, cheese, and leeks, or brisolée, roasted chestnuts served with local cheeses, dried meats, and fresh fruits. These dishes tell the story of this alpine region’s culinary traditions and are a must-try when dining in Sion.
Shopping in Sion: Souvenirs and Local Products
In Sion, you’ll find a mix of traditional Swiss products and local artisanal goods, making it an ideal destination for those seeking authentic souvenirs. The town’s historic center, particularly the traffic-free Grand Rue du Pont, offers a delightful shopping experience with its variety of local shops.
For wine enthusiasts, Sion is a paradise. You can purchase bottles directly from local producers, and many shops offer shipping services so you can enjoy Valais wines long after your trip has ended. This is a great way to take a piece of Sion back home.
The weekly market held on Fridays is the perfect place to find fresh local products, artisanal foods, and handcrafted items. These make meaningful souvenirs with a genuine connection to the region. Be sure to explore the various stalls offering Valais-specific products like apricot brandy, alpine honey, and the famous dried meat known as “viande séchée.”
Sion is also renowned for its high-quality Swiss chocolate. Several chocolatiers in the town offer unique flavors inspired by local ingredients, making for excellent gifts or personal treats. For something more lasting, consider shopping for traditional Swiss crafts such as carved wooden items or locally made ceramics that showcase the region’s artistic heritage.
Many shops in Sion are family-owned businesses that have been operating for generations. This offers a more personal shopping experience and a wonderful way to connect with local culture while supporting the community.
Sion, Switzerland: Best Things to Do – Top Picks
As you explore Sion, you’ll discover a city that seamlessly blends history, culture, and natural beauty. With its unique position as Switzerland’s sunniest destination, Sion offers a plethora of activities for visitors to enjoy.
One of the top attractions in Sion is the medieval castles perched on twin hills. Tourbillon and Valère castles are a must-visit, offering both fascinating history and spectacular views of the city and valley below.
Nature lovers will find plenty to enjoy in and around Sion. The remarkable underground lake at St-Leonard is a unique experience, while peaceful walks along the Rhône River or adventures in the nearby lakes and mountains offer a chance to connect with nature.
The charming old town is filled with history and culture, featuring museums, a cathedral, and a weekly market. Visitors can wander through the narrow streets, taking in the authentic atmosphere and local traditions.
Top Picks | Description |
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Tourbillon Castle | Explore the medieval castle and enjoy spectacular views |
Valère Castle | Discover the history and culture of Sion at this iconic landmark |
Lac Souterrain | Visit Europe’s largest underground lake |
Rhône River | Take a peaceful walk along the river and enjoy the scenery |
Whether you’re using Sion as a base to explore famous places like Zermatt or focusing on the city itself, you’ll find that this often-overlooked Swiss destination offers a perfect blend of history, culture, nature, and gastronomy. In Sion, you’ll discover a fantastic way to experience the best of Switzerland.
Conclusion
With its unique blend of history, culture, and natural beauty, Sion is a must-visit destination in Switzerland. As you plan your trip to this charming city, you’ll find that it offers a perfect blend of experiences that will leave you with lasting memories.
One of the key advantages of visiting Sion is its strategic location, making it an ideal base for exploring the wider Valais region. You can take your time to discover the lesser-known treasures of the Rhône Valley or visit popular destinations like Zermatt. Whether you’re interested in history, culture, or outdoor activities, Sion has something to offer year-round.
As you explore Sion, you’ll find that the city’s relaxed pace and charming old town streets make it a perfect destination to unwind. We hope this guide has helped you make the most of your trip to Sion and that you’ll have a memorable experience. In conclusion, Sion is a city that will captivate you with its stunning Alpine setting, rich history, and warm hospitality, making it a great way to experience the best of Switzerland.
So, consider allocating at least two to three days for Sion and its surroundings to appreciate the city’s hidden corners and discover its many places of interest. With its unique charm and attractions, Sion is sure to be a highlight of your Swiss adventure.