 Especially noteworthy are the remains of the staircase, installed about 1400 in one of the keep's 12th century corner towers and the vaulted arches of the second floor (about 1400-1415).On the arch supports can be seen the armorial bearings of Louis II d'Anjou (1384–1417) and the countess of Vendôme, Alix de Bretagne (deceased in 1377).In the south-west tower is a narrow dungeon, accessible only by a well (15th century?