Caligraphy Roundels Naming Hasan, grandson of Mohammed on left and Caliph Alion on right, with tourists viewing from the Gallery, Interior, Hagia Sophia Grand Mosque, 537 AD, UNESCO World Heritage Site, Sultanahmet, Istanbul, Turkey, Europe

Museum of Fine Arts of Asturias, Oviedo, Asturias, Spain

Museum of Fine Arts of Asturias, Oviedo, Asturias, Spain

The works of Pablo Picasso at the Museu Picasso (Piccaso Museum), Barcelona, Catalonia, Spain, Europe

Museum of Warsaw, Warsaw, Poland, Europe

Viewing gallery on the 72nd floor of the Shard, London Bridge, London, England, United Kingdom, Europe

People on the viewing gallery of the Peak Tower, Victoria Peak, Hong Kong Island, Hong Kong, China, Asia

The Reichstag dome, interior, Berlin, Germany

People looking at painting, Visitors looking at a painting inside the Hungarian National Gallery at Royal Palace on Castle Hill, Buda, Budapest, Hungary