Château de Beauregard, 17th-century castle in Saint-Péray, France

The Château de Beauregard is a castle in Saint-Péray featuring a central building with square pavilions and large windows. An enclosing wall with numerous defensive openings surrounds the structure, reflecting its defensive design.

Built between 1640 and 1652 by Claude Teste-Fernand de la Motte, the castle became a state prison in 1696. This role ended in 1791 with the French Revolution.

The castle became central to Saint-Péray's sparkling wine tradition after its conversion to a wine cellar in 1829. This transformation shaped how locals view the place and connected the building to the region's winemaking identity.

The castle has been publicly owned by Saint-Péray since 2020 and can be visited by the public. Access and visiting hours are managed by the municipality to ensure proper care of the site.

The vaulted cellar beneath the ground floor and first floor held a channel that collected wine from burst bottles. During the prison years this same space served as the prisoners' exercise walk, and it connects to the north terrace. The cells are said to survive near an old oubliette in the north-west corner.