keep
type of fortified tower built within castles during the Middle Ages by European nobility
shell keep
style of medieval fortification
St Leonards Tower
Grade I listed tower in West Malling, Kent, England, UK
donjon
type of fortified tower built within castles during the Middle Ages by European nobility
Donjon de Houdan
fortified tower
Donjon de Pons
keep in Pons, France
Tower of the Urrea family
castle in Sestrica, Spain
Donjon de la Toque
keep in Huriel, France
Tour des Archives
Keep of a former castle in France
German keep
fortified medieval tower
Castle of Biota
defensive tower in Biota, Spain
Kut Tower
tower in Al -Kharj
Clifford's Tower
ruined keep of York Castle, York, North Yorkshire, England, UK
White Tower
central tower, the old keep, at the Tower of London