#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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