Best castles around Oulx are found in the Upper Susa Valley, a region characterized by its mountainous terrain and strategic historical importance. Oulx, a historic town, serves as a gateway to numerous fortifications and historical sites. The area's landscape has shaped its defensive architecture, from medieval towers to 19th-century forts. This region offers insights into centuries of military history and architectural evolution.
Last updated: October 11, 2026
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Beyond the scenic aspect (exceptional viewpoint) this fort testifies to the presence of a fortified border line (of which numerous remains are also visible on the mountain ridges above the Granon pass) which the French had erected, starting from the second half of the 1800s, as border defense. In particular, the fort of Lenlon, which in shape strongly resembles the fort of La Ronce at Mont Cenis, was erected in 1891 and its function was to reinforce the defenses towards the Clàrèe valley, partly already manned by the underlying fort de l'Olive. The defensive system was articulated on two levels, where numerous loopholes for riflemen opened (around eighty soldiers, the fort's armament did not include artillery pieces). A beautiful military road, still well preserved, allows for easy ascent.
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From the foot of the Col du Granon to Fort Lenlon. E-mountain bike weighing 23.8 kg
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This tower is part of the city's old medieval fortifications. It can be reached either by a fairly good (but fairly straight) dirt road from the east side, or by the paved Via Tur d'Amun and a short dirt section. Behind the tower, archaeological excavations have uncovered the ancient structures of the defensive complex (the excavation site is currently closed for construction [August 2025]). The view of Bardonecchia and the surrounding mountains is stunning.
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Access via an old road which is quite degraded around the fort.
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Tallest military fort in Europe. The climb is long and tiring and very crowded in the months of July-August but once at the top every effort is rewarded
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The fortress in the clouds. An incredible building in an incredible place. The ascent by MTB is (was) feasible by pedaling to the French border but then the mule track becomes in bad condition at times and it was necessary to push. A lot of effort but worth it...
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The Lenlon fort is located at an altitude of 2,508 meters about three kilometers from the Oliva fort that dominates by 250 meters. To defend this fort, it was decided between 1890 and 1893 to fortify higher, the Lenlon crest with a line of batteries, a powder magazine under rock and rubble masonry work, in the form of a crenelated tower. It can be reached via the Clarée valley or the Col du Granon on foot and by mountain bike.
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long, tiring but super classic route, it offers breathtaking views and bits of history with the remains of its fortifications
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The region around Oulx is rich in historical fortifications. The Mont Chaberton Fort, once the highest fort in the world, offers insight into Italian defenses against France. Forte Bramafam, a 19th-century fort, stands on the site of a former Dauphiné castle and now houses a military museum. In Oulx itself, the Torre Delfinale, dating back to the 13th or 14th century, is a key medieval monument that served as a residence for Royal officials.
Yes, Forte Bramafam is considered family-friendly. It houses a museum with military equipment and uniforms, which can be engaging for visitors of all ages. The Torre Delfinale in Oulx is also easily accessible within the historic village, making it suitable for families.
The best time to visit the fortifications around Oulx generally depends on their altitude. Lower-lying sites like the Torre Delfinale in Oulx are accessible year-round. For high-altitude forts such as Mont Chaberton Fort or Fort Lenlon, the summer months (late spring to early autumn) offer the most favorable weather conditions for hiking and exploration, as winter can bring heavy snow and challenging access.
While specific rules vary by site, many outdoor areas and trails leading to fortifications are dog-friendly, especially if kept on a leash. For example, the trails around Forte Bramafam are generally suitable for dogs. It's always advisable to check individual site regulations before visiting, especially for indoor museum sections.
Absolutely. The region offers numerous hiking opportunities that often lead to or pass by these historical sites. For instance, reaching Mont Chaberton Fort involves a challenging hike. You can find various routes, including those around Oulx, by exploring the Hiking around Oulx guide.
The forts around Oulx, especially those at higher altitudes, offer impressive panoramic views of the surrounding valleys and mountains. From Mont Chaberton Fort, you can see the Petite Durance valley and identify surrounding peaks. Tur d'Amun also provides stunning views of Bardonecchia and the surrounding mountains.
Public transport options to reach some of the more remote forts can be limited. Oulx itself is well-connected, but accessing sites like Mont Chaberton Fort or Fort Lenlon often requires a car followed by a hike. For sites closer to towns, local buses might be an option. It's best to check local transport schedules for specific destinations like Fort of Exilles or Forte Bramafam.
Yes, the Susa Valley is popular for cycling, and some routes may take you near these historical sites. For example, you can explore various cycling routes in the area through the Cycling around Oulx guide or the Road Cycling Routes around Oulx guide, which include options that might offer views or access points to some fortifications.
The Fort of Exilles is an imposing fortress in the upper Susa Valley with a long and interesting history. It is famously associated with the legend of the 'Man in the Iron Mask,' who was temporarily imprisoned in a previous building on the site. The fort has undergone numerous transformations over centuries, reflecting its strategic importance in the region.
For fortifications located directly within or very close to towns, such as the Torre Delfinale in Oulx, you'll find cafes, restaurants, and other amenities readily available in the historic center. For more remote forts like Mont Chaberton Fort or Fort Lenlon, amenities will be limited to the nearest villages or towns at the base of the mountains.
Forte Bramafam is unique because it's a well-preserved 19th-century fort built on the site of an older Dauphiné castle, showcasing the continuous strategic importance of its location. It has been renovated thanks to the efforts of volunteers and now houses a museum with a collection of military equipment and uniforms from the late 1800s until 1945.
The Torre Delfinale is located in the old village of Oulx, making it quite accessible. It's a short walk from the Church of Santa Maria Assunta, allowing visitors to explore Oulx's historic center easily. Its central location means parking and nearby amenities are generally convenient.


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