#fortress__fort a fortified defensive structure
supertype: defensive_structure__defensivestructure__defense a structure used for defense; "the artillery battered down the defenses"
part: battlement
subtype: alcazar any of various Spanish fortresses or palaces built by the Moors
subtype: Alhambra a palace and fortress built in Granada by the Moslems in the Middle Ages
subtype: martello_tower a circular masonry fort for coastal defence
subtype: Tower_of_London a fortress in London on the Thames; used as a palace and a state prison and now as a museum containing the crown jewels
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