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Fenestrelle Fortress
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The Fenestrelle Fortress, often referred to as the 'Great Wall of the Alps,' is the largest alpine fortification in Europe, located in the Chisone Valley of the Piedmont region. Construction of this monumental complex began in 1728 under the orders of King Victor Amadeus II of Savoy and spanned 122 years, reaching completion in 1850. The fortress covers a vast area of 1.3 million square meters and rises across a vertical drop of approximately 600 meters. It comprises three main forts, several redoubts, and batteries, all interconnected by a unique covered staircase known as the Scala Reale, which features nearly 4,000 steps. Originally designed to defend the border against French incursions, it later served as a state prison and a military barracks. Today, the fortress stands as a remarkable example of military engineering and a symbol of the Piedmont region, offering guided tours that detail its strategic history and the rigorous architectural challenges of its construction.
- Location: Italy
- Top sights: Forte delle Valli · Forte di Fenestrelle · Ridotta d'Andourn
- Nearby: Sauze d'Oulx (15 km)
Best time to visit & climate
The most pleasant time to visit is Jun–Aug.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | -8 | -7 | -3 | 2 | 6 | 11 | 13 | 13 | 9 | 4 | -1 | -6 |
| Rain mm | 45 | 43 | 54 | 68 | 92 | 77 | 60 | 58 | 57 | 65 | 91 | 57 |
📋 Practical info
Visiting
The fortress is open to visitors, with both the inner courtyards and the ramparts accessible for exploration. Interior rooms are typically included in the ticket, though some areas may be closed off.
Typical hours
Fortresses of this size typically have seasonal opening hours, often from morning until late afternoon. It is advisable to check the current schedule online in advance.
Photography
Photography is allowed in most outdoor areas and courtyards. Some interior rooms may have a flash ban - please watch for signs.
Time needed
Allow at least three to four hours for a thorough walking tour. If you also plan to explore the remote bastions, half a day might be needed.
Combine with
Combine the visit with other forts in the Susa Valley, such as the Exilles Fortress. The nearby town of Fenestrelle with its historic houses is also worth a detour.
Getting there
The easiest way to reach the fortress is by car via the A32 highway to the Oulx exit. From there, a well-signed road leads directly to the parking lot at the entrance.
Insider tip
Wear sturdy footwear without fail, as the paths are steep and uneven. Bring plenty of water, especially in summer, because there are few drinking fountains on site.
Geography
Facts
- The fortress extends for approximately 3 kilometers along the mountain ridge.
- The Scala Reale consists of exactly 3,996 steps inside a covered tunnel.
- The structure was designed by the renowned military engineer Ignazio Bertola.
- The complex includes three distinct forts: San Carlo, Tre Denti, and delle Valli.
- In 1999, the fortress was designated as the symbol of the Province of Turin.
- During the Napoleonic era, it served as a high-security prison for political dissidents.
Explore nearby
Notable places around
Route planner — Car & Motorhome
Where do you start? We build the route here, with stops and country notes along the way.
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© OpenStreetMap contributors · OpenRouteService
Sights in the town Fenestrelle Fortress (4)
Sights nearby
Frequently asked questions
How many steps does the Fenestrelle Fortress have?
The fortress features the Scala Coperta with about 4,000 steps, making it the longest covered staircase in Europe.
How long does a guided tour take?
Several tours are available, ranging from a 1-hour short visit to a full 7-hour panoramic hike.
Is the fortress open in winter?
Yes, but visits are weather-dependent and often limited to the lower sections of the fortress.
Is the fortress suitable for children?
It is an adventure for older children, but the site is unsuitable for strollers due to the many stairs.
Is there parking on site?
There is a parking lot right in front of the main entrance (Forte San Carlo), easily accessible by car.
Fenestrelle Fortress: where is it located?
Fenestrelle Fortress is located in Italy.
Fenestrelle Fortress: what is there to see?
Highlights include Forte delle Valli, Forte di Fenestrelle, Ridotta d'Andourn.
Fenestrelle Fortress: when is the best time to visit?
The most pleasant time to visit is Jun, Aug.
Fenestrelle Fortress: why is it worth visiting?
The Fenestrelle Fortress, often referred to as the 'Great Wall of the Alps,' is the largest alpine fortification in Europe, located in the Chisone Valley of the Piedmont region.
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