Steel Balls, with Winter Gardens behind, Millenium Square, Heart of the City, Sheffield, Yorkshire, England

Municipal Library, Viana do Castelo, Minho-Lima, Portugal

Messner Mountain Museum (MMM), Kronplatz (Plan de Corones), Dolomites, near Brunico (Bruneck), South Tyrol (Alto Adige), Italy

A building complex in the harbour, Palau, Micronesia, Pacific

Maraya Theatre, architect Studio Gio Forma, mirrored structure seeming to disappear in AlUla's Ashar Valley, AlUla, Medina Province, Saudi Arabia

Esplanade bridge and esplanade theaters on the bay, Singapore

View of mosque and modern skyscrapers at night in Dubai Marina in Dubai, United Arab Emirates

Ball court near the high temple at the Mesoamerican archaeological site of Lamanai (Submerged Crocodile), Belize

View of the Harpa Concert Hall and Conference Centre, Reykjavik, Iceland

Group of at least eight killer whales (Orcinus orca) surfacing off the coast of the island of Surtsey, southern Iceland

Buffalo Bayou River, Downtown Houston, Texas, United States of America

View of Skyway Monte Bianco cable car station at Pavillon du Mont Frety and Aosta Valley in winter, Courmayeur, Aosta Valley, Italian Alps, Italy

View of Harpa Concert Hall and Conference Centre in the city centre in winter, Reykjavik, Iceland

Palisade at Jelling, UNESCO World Heritage Site, Jutland, Denmark, Europe

House of Music Hungary (Magyar Zene Haza), contemporary music hall, Budapest, Hungary

House of Music Hungary (Magyar Zene Haza), contemporary music hall, Budapest, Hungary

View of Hisago-ike Pond and Yugao-tei (Gourd Tea House) in Kenrokumachi Japanese Garden, Kanazawa City, Ishikawa Prefecture, Honshu, Japan

View from second deck of fire watchtower on summit of Apache Maid Mountain, Coconino National Forest, Arizona, United States of America

American flags surrounding the Washington Monument in Washington, D.C., United States of America

Steep stairs leading on a heap at Lake Phoenixsee on the grounds of the former steelworks Hermannshuette Phoenix-Ost, structural change, residential area, recreational area, Hoerde, Dortmund, North Rhine-Westphalia, Germany, Europe

Ventilation pipes of the underground car park, and Cinedom cinema, modern architecture in snow and ice, Mediapark, Cologne, Rhineland, North Rhine-Westphalia, Germany, Europe

Casino and Kurhaus, spa resort in Kurpark, spa park, Bad Ems, Rhineland-Palatinate, Germany, Europe

Lynn Canyon Suspension Bridge North Vancouver British Columbia Canada

Bicycle And Blue Doors, Kairouan, Tunisia, Africa

A statue guards the Phra Mondop library of the Grand Palace., Phra Mondop Library, The Grand Palace, Bangkok, Thailand.

Statues of Krut adorn the library of the Temple of the Emerald Buddha., Phra Mondop Library, The Grand Palace, Bangkok, Thailand.

Man Riding Antique Bicycle

A Bicycle In Beijing, China

Bicycle, Burano, Italy