ancient architecture battlements castle Catalan catalonia Catalunya defend defensive elements forest fortification high historical old ruined Spain spanish stone view blue defence defense deter deterrence keep metal off point roof safe secure security sharp sky spike spikes vandal vandalism Alcantara arch bridge building fortified gatehouse protect Toledo tower bedrock beige brown cliff face fortifications garden Malta path plant rock sandstone travel UNESCO World Heritage Valetta yellow bench brick century church collegiate cross george gothic grass history ketrzyn pray saint wall xiv yard crenellations dundee home house Mains scotland scottish strong sunshine turret walls windows armies army usa bigone defence war militar fight GI joe soldiers war war europe weapons world war 2 ww2 black fort fortress gray grey medieval moat palace storm stormy white