Traditional door, Ile De Re, France.

Forth Rail Bridge crossing the firth of Forth Fjord near Edinburgh, Scotland, Great Britain, Europe

Detail of Andresey Bridge, an iron bridge over the River Trent built in 1884, in the park of Burton upon Trent, Staffordshire, England, Europe

Neue Elbbruecke Elbe bridge, Hamburg, Germany, Europe

Public spiral staircase in Hamburg-Allermoehe, Germany

Cable-stayed bridge, bridge pier, pylon, Erasmus Bridge, Erasmusbrug, Rotterdam, Kop van Zuid, Netherlands, Europe

Cable-stayed bridge, bridge pier, pylon, Erasmus Bridge, Erasmusbrug, Rotterdam, Kop van Zuid, Netherlands, Europe

Pergola

Hohenzollernbruecke bridge at night, detail, Cologne, North Rhine-Westphalia, Germany, Europe

Glass roof with metal struts, Europa Center in the City West district of Berlin, Germany, Europe

Eiserner Steg, Iron Footbridge, with views towards downtown and the financial district, Frankfurt am Main, Hesse, Germany, Europe

Erasmus Bridge, Rotterdam, South Holland, Holland, Netherlands, Europe

Snorkeler framed by the struts of a wreck of a plane on the seabed.