Colonial Forum of Tarraco, UNESCO, Tarragona, Catalonia, Spain

Colossus of Barletta, Basilica of the Holy Sepulchre, Barletta, Barletta-Andria-Trani, Apulia, Italy

Medieval stone tower on a hill with a clear blue sky in the background, Clifford's Tower, York, North Yorkshire, England, United Kingdom, Europe

Majestic medieval castle on a hill with lush greenery under a clear blue sky, Bamburgh, Northumberland, England, United Kingdom, Europe

Memorial For Those Lost at Sea (The Figurehead), by artist Bill Ming, at St. David's, Bermuda

Aerial view of Qasr al-Farid, the largest tomb within Site of Hegra (Madain Salih), UNESCO, in the area of AlUla, Medina Province, Saudi Arabia

Aerial of tombs carved in sandstone rock of Jabal Banat (Qasr al-Bint), Hegra (Madain Salih), UNESCO, AlUla area, Medina Province, Saudi Arabia

Landscape of Athens from the Areopagus, a notable rock outcrop northwest of the Acropolis, Athens, Greece, Europe

Titanium facade of the Guggenheim Museum designed by Frank Gehry, Bilbao, Basque Country, Spain, Europe

Tangier Grande Mosque with its green roof tiles, Tangier, Morocco

Views of waterfall near Grytviken, Swedish for Pot Cove, on South Georgia in the South Atlantic, Polar Regions