Image: Diego Delso · CC BY-SA 3.0

Bridge in Porto, Portugal

The Luiz I Bridge, commonly known as Dom Luís I Bridge, is a double-deck metal arch bridge that spans the river Douro between the cities of Porto and Vila Nova de Gaia in Portugal. At its construction, its 172 metres (564 ft) span was the longest of its type in the world. It can be confused with the nearby Maria Pia Bridge, a railway bridge that was built 9 years earlier, which is similar in aspect to the Luiz I bridge.

41.1399, -8.6093 · Open in map · Wikipedia