Château de Saint-Jean-de-Chepy, Historical castle in Tullins, France.

The Château de Saint-Jean-de-Chépy in Tullins is a former fortified house with a square plan and two towers to the north and south, both fitted with loopholes and gun ports for pistols or muskets. Two corbelled watchturrets stand at the east and west corners. The building sits on a sandy strip in the alluvial plain of the Isère, near the Fure, and its ten-hectare park holds monumental sculptures shown outdoors.

The fortified house was built in the second half of the 13th century and originally belonged to the Bressieux family. In the 18th century it was renamed Château des Cordes and underwent further changes in its use and importance.

The estate hosts sculpture exhibitions in its park, bringing together architectural heritage and contemporary art. Visitors can experience this relationship between historic walls and modern artistic expressions within the same grounds.

The estate covers ten hectares of meadows and undergrowth, bordered by the Fure, a tributary of the Isère. Public access passes in front of the castle, where the reception desk is located. The castle is linked by a country lane to the D1092 between Romans-sur-Isère and Voiron; the nearest station is Tullins-Fures, served by TER Rhône-Alpes trains.

The first-floor room of the south tower has a 17th-century ceiling painting of the twelve zodiac signs as constellations, made for the scientist Maurice Bressieu. Restored in 1977, it is classed as a monument historique and still studied by historians and art specialists.