A castle has existed in Sully since at least the 11th century. In the late 14th century, Guy de la Trémoille becomes the new lord of Sully and asks… Access to the castle was originally only possible using a drawbridge, which was replaced by a static bridge in the 18th century. Inner courtyard. Inner courtyard. Inner courtyard. Inner courtyard. Inner courtyard. Inner courtyard. In 1602 a minister to king Henri IV, Maximilien de Béthune becomes Duke of Sully. A replica of his tomb is exhibited in his former castle. Room used by cooks and servants. It used to be split into smaller rooms. Great hall, 300 square meters. The castle of Rosny-sur-Seine, where the Duke of Sully was born, is painted on the chimney. Great hall. Machicolation room, from where the drawbridge was operated. Duke of Sully turned it into an office room. Labels