The tower features a unique collection of 'graffiti' carved by inmates, including elaborate drawings and personal pleas from the 17th and 18th centuries.
During its period as a prison, the tower was colloquially known as the 'Bastille of the South'.
The walls of the tower reach up to 3 meters in thickness in the base sections.
The top terrace offers a 360-degree view that includes the Rhône Valley and the pre-Alps.
The tower remained in use as a prison until the mid-19th century, long after many other medieval keeps had been abandoned.
Crest Tower is the tallest medieval keep in France, standing 52 meters high overlooking the Drôme Valley. Originally built as a fortress for the Counts of Valentinois, the structure transitioned into a state prison between the 15th and 19th centuries. The tower contains three levels of dungeons featuring original prisoner graffiti and period ironwork. Visitors can climb the internal spiral staircase to access the rooftop terrace, which provides panoramic views of the Vercors Massif and the Alps. The architecture exhibits a transition from Romanesque foundations to later Gothic renovations. Historical inscriptions on the walls document the experiences of political and religious prisoners held within the tower. The site is a registered Monument Historique of France.
The rooftop terrace provides the clearest vantage point of the surrounding valley and the town rooftops below.
Wear sturdy, rubber-soled shoes as the stone stairs can be slippery and uneven.
Bring a jacket even in summer, as the internal dungeon sections remain significantly cooler than the exterior.
Check the official website for scheduled guided themed tours if you want to access restricted areas.
Do not attempt the climb if you have limited mobility or a fear of heights, as the spiral staircase is steep and narrow.
Open daily throughout the main tourist season; operates with reduced accessibility during winter months.
Maintain a quiet tone in the dungeon areas; avoid touching the fragile historical graffiti on the walls.
