This former medieval fortress combines a sophisticated 15C Gothic style with Renaissance, Baroque and even Rococo elements, following a series of accidents and the earthquake of 1667. However, the combination of styles remains very pleasing as the inner courtyard soon reveals. Note the remarkable Renaissance capitals of the outer gallery as you go in. Under the Republic, the palace was home to the Rector's apartments, the chamber of the Lower Council, administrative offices, a guardroom, an arsenal and a prison.