blue defence defend defense deter deterrence keep metal off point roof safe secure security sharp sky spike spikes vandal vandalism Alcantara ancient arch architecture bridge building fortification fortified gatehouse historical old protect Spain spanish stone Toledo tower bedrock beige brown cliff defensive face fortifications garden Malta path plant rock sandstone travel UNESCO World Heritage Valetta yellow bench brick castle century church collegiate cross george gothic grass history ketrzyn pray saint wall xiv yard battlements 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 city Israel Jerusalem landmark limestone strength
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