Waves crash against the base of Castillo San Felipe del Morro, San Juan, Puerto Rico
View from the city wall towards Fort Lovrijenac, Dubrovnik, Croatia
Castillo de San Marcos National Monument at morning, St. Augustine, Florida, USA
View of the village of Malcesine on the shores of the Garda Lake, Verona, Veneto, Italy
The medieval castle Castello di Domofole at sunset, Mello, Lower Valtellina, Lombardy, Italy
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