Aerial view of Castle Rising, a medieval castle, Norfolk, England, United Kingdom, Europe

View of Kavala Fortress from ferry, Kavala, Dimos Kavalas, Eastern Macedonia and Thrace, Gulf of Thasos, Gulf of Kavala, Greece, Europe

Full moon rising over Leeds Castle, near Maidstone, Kent, England, United Kingdom, Europe

The ziggurat, Agargouf, Iraq, Middle East

Torre Astura castle rising above the water of the Tyrrhenian Sea seen from the golden beach at sunset, Rome province, Latium (Lazio), Italy, Europe

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

View from Zeller Horn onto Hohenzollern Castle above cloud cover, autumn, Albstadt, Baden-Württemberg, Germany, Europe

Burg Hohenzollern castle in morning light with autumn forest, morning mist, Schwaebische Alb, Swabian Alb, Baden-Wuerttemberg, Germany, Europe

Burg Hohenzollern castle, in morning light, mist, with autumn forest, Schwaebische Alb, Swabian Alb, Baden-Wuerttemberg, Germany, Europe

Early morning at the Burg Hohenzollern castle from the Zeller Horn, Swabian Alb near Hechingen, Baden-Wuerttemberg, Germany, Europe

Burg Hohenzollern castle in autumn, Swabian Alb, Baden-Wuerttemberg, Germany, Europe

Early morning at the Burg Hohenzollern castle from the Zeller Horn, Swabian Alb near Hechingen, Baden-Wuerttemberg, Germany, Europe