Alcantara ancient architecture bridge fortifications historical old river secure security Spain spanish stone Toledo town water Crete defence desert Desert fort embrasure foreign fort fortification fortress Greece gun gun slit HDR legion legions loophole slit stronghold wall walls war city coast defense Greek harbor harbour homes houses mediterranean nafplio sea view battlements building castle david Israel Jerusalem ramparts tower moat croatia defend europe flag historic medieval Rijeka turret background black cobblestones history house middle age postcard rampart village
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