Château de Kerguéhennec, Castle and contemporary art center in Bignan, France.

Château de Kerguéhennec is an 18th-century castle built in 1710 by architect Olivier Delourme for the Hogguer brothers, financiers from Saint-Gall. Its central block rises three storeys beneath a steep dark roof with dormer windows; a curved pediment tops the entrance, which has a balcony and a small staircase. A long low wing extends to the right, linked by a balustrade and stone gate pillars. The estate covers 170 hectares.

Built in 1710 by architect Olivier Delourme for the Hogguer brothers, Swiss financiers from St. Gallen and shareholders of the Compagnie des Indes. Guy-Auguste de Rohan-Chabot bought the estate in 1732 as agricultural and forest land and never lived there; his son Louis-Antoine had to sell it after the Revolution. Count Louis de Janzé acquired it in 1802, and in 1872 Paul-Henri de Lanjuinais bought it and had it restored by the Parisian architect Ernest Trilhe.

The château's name comes from the Breton estate, and since 1988 its outbuildings have housed a contemporary art centre with an annual programme now held on the first floor of the castle itself. A cultural meeting centre also hosts musicians and composers in residence. In the park, a 1986 sculpture garden shows some thirty works, including pieces by Richard Long, Giuseppe Penone, Toni Grand and Dan Graham.

The château itself is closed for building work until 2027, but the 170-hectare park stays open. The grounds lie about 20 km north of Vannes on the road to Pontivy. The south side has a level cour d'honneur with a central basin, balustrades and an iron gate; the northern part is laid out in the English style.

The sculpture garden was laid out in 1986 on the initiative of the regional directorate of cultural affairs and the regional contemporary art fund. Jean-Pierre Raynaud placed a thousand red pots in the former greenhouse, Marta Pan designed a water course, and Malachi Farrell created a permanent bubbling on the lake, originally conceived as a water mirror.