The Øresund

The Øresund is a roadway that turns into an underwater tunnel connecting Denmark and Sweden. It is nearly eight kilometers long and it reaches half way through the strait. It was opened on July 1, 2000 and designed by the Danish architect George K.S. Rotne. The Lund’s Botanical Association has identified more than 500 different species of plants on the island, which was constructed from material dredged from the seabed. Most of the concrete tunnel was cast on land and towed out to the location.

More info: http://twistedsifter.com/2015/09/oresund…