Olive tree against the titanium facade of the Guggenheim Museum designed by Frank Gehry, Bilbao, Basque Country, Spain, Europe

Ceiling inside The Harem, Topkapi Palace, UNESCO World Heritage Site, Istanbul, Turkey, Europe

Titanium clad facade, Guggenheim Museum, Architect Frank Gehry, Bilbao, Basque Country, Spain, Europe

View of Opera House interior of the foyer and auditorium, Oslo, Norway, Scandinavia, Europe

Dramatic architecture, Hibiya Marine Building, Tokyo, Honshu, Japan, Asia

Museum of Modern Art Monchsberg, Salzburg, Upper Austria, Austria, Europe

Foreign Ministry building, Itamaraty Palace (Palace of the Arches), designed by Oscar Niemeyer, UNESCO World Heritage Site, Brasilia, Federal district, Brazil, South America

View of summer flowers and waterfront architecture, Aker Brygge, Oslo, Norway, Scandinavia, Europe

St. Luke and St. John the Evangelists statues by Alfredo Ceschiatti and Dante Croce in front of Roman Cathedral of Brasilia (Metropolitan Cathedral), designed by Oscar Niemeyer, UNESCO World Heritage Site, Brasilia, Federal district, Brazil, South America

Interior of Casa da Musica, Porto, Norte, Portugal, Europe

Moesgaard Museum (MOMU), Henning Larsen Architects, museum of archaeology and ethnography, Hojbjerg, suburb of Aarhus, Jutland Peninsula, Denmark, Europe

Maison de la Culture (Culture House), Le Corbusier site, UNESCO World Heritage Site, Firminy, Saint-Etienne, Loire department, Auvergne-Rhone-Alpes region, France, Europe

Modern Architecture at Grotemarkt Blaak, Rotterdam, The Netherlands, Europe