Puente de Piedra, reconstruction of bridge built by St. Dominic, John of Ortega, over Rio Ebro (Ebro River), Logrono, Camino de Santiago, La Rioja, Castile and Leon, Spain, Europe

Loopline rail bridge (Liffey Viaduct) built 1891 and designed by John Chaloner Smith, spanning river from Pearse railway station, Dublin, Republic of Ireland, Europe

Pulteney Bridge, architect Robert Adam, built in 1774 in Palladian style, River Avon, UNESCO World Heritage Site, Bath, Somerset, England, United Kindom, Europe

The Fort of Nossa Senhora da Penha de Franca, popularly known as the Fortaleza Ponta da Bandeira, built towards the end of the 17th century to defend the harbour, Lagos, Algarve, Portugal, Europe

El Cable Ingles raised railway line, built between 1902 and 1904 for iron ore export, Almeria city, Andalusia, Spain, Europe

Ha'penny Bridge, historic pedestrian bridge built 1816, crossing River Liffey, city of Dublin, Republic of Ireland, Europe

Clifton Suspension Bridge, built by Brunel across the Avon gorge, Bristol, Avon, England, UK

The Japanese covered bridge, first built in 1593, Hoi An, Vietnam, Indochina, Southeast Asia, Asia

The Fort of Nossa Senhora da Penha de Franca, popularly known as the Fortaleza Ponta da Bandeira, built towards the end of the 17th century to defend the harbour, Lagos, Algarve, Portugal, Europe

Metal footbridge over the Onyar River, built by Eiffel and Company in 1876, Girona, Catalonia, Spain, Europe

Fully connected Guangji Bridge, built in 1170, one of China's four famous ancient bridges, Chaozhou, Guangdong province, China

Entrance pavilion of Guangji Bridge, built in 1170, one of China's four famous ancient bridges, Chaozhou, Guangdong province, China

Guangji Bridge, built in 1170, one of China's four famous ancient bridges, Chaozhou, Guangdong province, China

Guangji Bridge, built in 1170, one of China's four famous ancient bridges, Chaozhou City, Guangdong province, China

The pavilions of Guangji Bridge, built in 1170, one of China's four famous ancient bridges, Chaozhou, Guangdong province, China

Guangji Bridge, built in 1170, one of China's four famous ancient bridges, Chaozhou, Guangdong province, China

Elbphilharmonie, a concert hall built on top of an old warehouse building, by Swiss architecture firm Herzog and de Meuron, viewed from the Niederbaumbrucke bridge, HafenCity district, Hamburg, Germany, Europe

The worlds first iron structure built in 1779 by Abraham Darby, Iron Bridge, Ironbridge Gorge, UNESCO World Heritage Site, Shropshire, England, United Kingdom, Europe

The worlds first iron structure built in 1779 by Abraham Darby, Iron Bridge, Ironbridge Gorge, UNESCO World Heritage Site, Shropshire, England, United Kingdom, Europe

The disused Steetley Pier was built to serve the former Hartlepool Magnesia Works which has now been demolished, Hartlepool, County Durham, England

Johnston Canyon, Banff National Park, Alberta, Canada

Stone Bridge In Mountain Landscape, Lake District, Cumbria, England, United Kingdom

California, San Francisco, Golden Gate Bridge from Marin County hillside.

California, San Francisco, Golden Gate Bridge, Blurred traffic lights at evening.

Canadian Museum for Human Rights and Esplanade Riel bridge, Canada, Manitoba, Winnipeg, Canadian Museum for Human Rights,Esplanade Riel bridge

Spain, Seville, Triana Bridge, Triana Bridge over Guadalquivir River

Canadian Museum for Human Rights, Canada, Manitoba, Winnipeg, Canadian Museum for Human Rights, Esplanade Riel bridge

Spain, Andalusia, Seville, Aerial view of cityscape