Palace of Westminster, London: Colin, CC BY-SA 4.0 · Tower Bridge, London: Diliff, CC BY-SA 3.0 · Edinburgh Castle: Saffron Blaze, CC BY-SA 3.0 · King's College Chapel, Cambridge: Dmitry Tonkonog, CC BY-SA 3.0 · Radcliffe Camera, Oxford: Photograph by Mike Peel (www.mikepeel.net)., CC BY-SA 4.0 · United States Capitol, Washington DC: Martin Falbisoner, CC BY-SA 3.0 · Stanford University Main Quad: King of Hearts, CC BY-SA 3.0 · Toronto skyline: Maksim Sokolov (maxergon.com), CC BY-SA 4.0 · Sydney Opera House and Harbour Bridge: Benh LIEU SONG (Flickr), CC BY-SA 4.0 · Milford Sound, New Zealand: Krzysztof Golik, CC BY-SA 4.0 · Charles Bridge, Prague: A.Savin, FAL · Brandenburg Gate, Berlin: Thomas Wolf, www.foto-tw.de, CC BY-SA 3.0 · Eiffel Tower, Paris: NonOmnisMoriar, CC BY-SA 3.0 · Canal houses, Amsterdam: Basile Morin, CC BY-SA 4.0 · Gamla stan, Stockholm: Julian Herzog (Website), CC BY 4.0 · Hungarian Parliament, Budapest: Pierre Blaché, CC0 · Hagia Sophia, Istanbul: Arild Vågen, CC BY-SA 3.0 · Kiyomizu-dera, Kyoto: Martin Falbisoner, CC BY-SA 4.0 · Gyeongbokgung Palace, Seoul: Frank Schulenburg, CC BY-SA 4.0 · Temple of Heaven, Beijing: Fong Chen, Public domain. Via Wikimedia Commons.