They have an interesting collection of ancient objects, The château was built and destroyed several times. The oldest still existing parts date from the 12th century and were built by Manassès de Seignelay (bishop from 1207 to 1221). Still standing are the main rectangular plan building, flanked by three towers, a fourth having been destroyed. It was occupied by the English during the Hundred Years' War. The rear façade was rebuilt in the Classical style by Fleuriau d'Armenonville (bishop from 1706 to 1733). Beneath the castle are dungeons, a chapel and various medieval torture instruments, including one used for water torture. In the 13th century, the bishops of Orléans abandoned the castle and it was used as a prison. Among those incarcerated there was the poet, François Villon.