Sunny day view of the iconic Tower Bridge over the River Thames,with blue skies and fluffy clouds, London, England, United Kingdom, Europe

Architecture in central Amsterdam, North Holland, The Netherlands

Borgund stave church, a triple-nave stave church of the Sogn-type, built around AD 1180, Borgund, Vestland, Norway, Scandinavia, Europe

LUMA Cultural Center building, architect Frank Gehry, Arles, Bouches du Rhone, Provence-Alpes-Cote d'Azur, France, Europe

Interior of Hagia Sophia Mosque, Sultanahmet, UNESCO World Heritage Site, Fatih District, Istanbul Province, Turkey, Europe

Auditorio de Tenerife, Santa Cruz, Tenerife, Canary Islands, Spain, Atlantic, Europe

Thomas Telford's Menai Suspension Bridge crossing the Strait, Anglesey island, Wales, United Kingdom

Detail of the High Tech pedestrian Helix Bridge with DNA structures, Singapore

Burj Khalifa, world's tallest tower, Downtown Burj Dubai, Dubai, United Arab Emirates

Burj Khalifa, world's tallest tower, Downtown Burj Dubai, Dubai, United Arab Emirates

Astronomical instruments of Jantar Mantar, UNESCO, Jaipur, Rajasthan, India

View of Tokyo Tower from its base against cloudy sky, Shibakoen, Minato City, Tokyo, Honshu, Japan

View of the River Spree and the Marie-Elisabeth-Luders-Haus, Mitte, Berlin, Germany

Torii shaped entrance to Kanazawa station, designed by architects Sejima and Nishizawa, Kanazawa City, Ishikawa Prefecture, Honshu, Japan

Colorful sunset over Dubai Downtown skyscrapers and newly built Tolerance Bridge seen from the Dubai water canal, Dubai, United Arab Emirates

Erasmus Bridge and architecture of Kop van Zuid, Rotterdam, The Netherlands, Europe

Planalto Palace (Presidential Offices), designed by Oscar Niemeyer, Three Powers Plaza, UNESCO World Heritage Site, Brasilia, Federal district, Brazil, South America

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

View of contemporary architecture in the Barcode area at dusk, Oslo, Norway, Scandinavia, Europe

Media City Footbridge, Media City UK, Salford, Greater Manchester, England, United Kingdom, Europe

Engineering students examining photovoltaic panel's structural design and mounting