Building, Castle, Flagstone, Wall, Fort, Soil, Archaeology, Slate, Outdoors, Nature, Ruins, europe, portugal, alentejo, alegrete, town, village, old town, landmark, castelo, castle, fort, building, gathering, landmass, dwelling, district, palace, military post, house, housing, facility, community, settlement, european country, small town, mansion, military installation, garrison, urban area