The  12th-century keep and the castle's  well lie within the inner bailey. The keep, with its entrance on the first floor, survives as a shell, with the west wall, interior floors and roof missing, as a result of bombardment in the 17th century. With its sloping plinth to aid defence, flat roof and four turrets, this square four-storey building was over .
The 12th-century keep and the castle's well are within the inner bailey. The keep, which has its entrance on the first floor, still exists as a shell with missing parts due to bombardment in the 17th century. With its sloping base for defense, flat roof, and four turrets, this square four-story building was originally .