Synonyms to martello tower

acropolis, bastion, beachhead, blockhouse, bridgehead, bunker, castle, citadel, donjon, fasthold, fastness, fort, fortress, garrison, garrison house, hold, keep, martello, mote, motte, peel, peel tower, pillbox, post, rath, safehold, strong point, stronghold, tower, tower of strength, ward, cupola, antenna tower, apse, arcade, arcature, arch, arched roof, archway, barbican, belfry, bell tower, camber, campanile, ceilinged roof, colossus, column, concameration, concha, cove, derrick, dome, fire tower, geodesic dome, igloo, keystone, lantern, lighthouse, mast, minaret, monument, obelisk, observation tower, ogive, pagoda, pilaster, pillar, pinnacle, pole, pylon, pyramid, shaft, skewback, skyscraper, span, spire, standpipe, steeple, stupa, television mast, tope, tour, turret, vault, vaulting, voussoir, water tower, windmill tower, abatis, advanced work, balistraria, bank, banquette, barbed-wire entanglement, barricade, barrier, bartizan, battlement, breastwork, bulwark, casemate, cheval-de-frise, circumvallatio