Milreu fortress on the cliff and Ribeira d'ilhas beach in Ericeira, Portugal, Europe

horizontal color image travel destinations travel outdoors day copy space cloud building architecture no people portugal europe milreu fortress ribeira d'ilhas ericeira fortress built structure cliff landscape rock formation rock sea water coastline water's edge past history nature scenics travel destination tourist destination tourist destinations rock formations rocks outdoor outside castle castles fort forts fortified fortification historic historical daytime cliffs