Cly Castle

Cly Castle is a fortress in Saint-Denis in the Aosta Valley that stands on a metamorphic rock formation. It overlooks the Dora Baltea valley and commands the surrounding landscape from its elevated position.

The castle was founded in 1207 as the administrative seat for large estates across several valleys. Scientific study of the wooden beams suggests that building materials came from much earlier.

The chapel dedicated to Saint Maurice shows Romanesque design elements and reflects the spiritual life within a medieval fortress. Visitors can see how faith and defense were intertwined in this period.

The castle is open during summer months and requires a guided tour to visit the interior. Plan ahead if you want to explore the buildings and see how they were arranged inside.

Testing of wooden beams in the central tower revealed that some building materials date back to the early 11th century. This suggests structures existed on this hilltop long before the official founding date.

Location: Saint-Denis, Aosta Valley

Inception: 1207

Opening Hours: July 1- August 31: Tuesday-Sunday 10:00-12:30, 14:30-18:00

Phone: +390166546055

Email: info@comune.saintdenis.ao.it

Website: http://comune.saintdenis.ao.it/turismo/territorio/il-castello-di-cly

GPS coordinates: 45.74922,7.56032

Latest update: December 8, 2025 21:01