The town's fourteenth century castle - built on an earlier, 12th century fortress - overhangs the town. It is a severe complex of courtyards and buildings which were built up layer by layer over the centuries and encircled by battlemented towers with massive square towers. The building has been a contemporary art gallery since 1975 and can be visited on appointment. Three rooms are dedicated to exhibitions and six studios are available to the same number of promising young artists.