Aerial view of the white octagonal castle of Castel del Monte rising in the middle of the countryside, UNESCO World Heritage Site, Apulia, Italy, Europe

travel destinations travel horizontal color image outdoors day no people cloud sky aerial view drone point of view italy europe castel del monte castle fortress built structure architecture building unesco world heritage site apulia nature tree countryside trees travel destination tourist destination tourist destinations outdoor outside nobody no one no person daytime castles fort forts fortified fortification history historic historical buildings