stronghold Synonyms

security refuge redoubt rampart protection prison presidio palisade palace oubliette murage keep hold support tower acropolises fasthold forts Towers tower of strength airbase military post command post casbah safehold beachhead wall vallation hippocampus haven center cell castle cage bunker bulwark bridgehead breastwork blockhouse battlement bastion barracoon alcazar chateau citadel guard garrison fortress fortresses fortification