Oresund Tunnel Bridge, Linking Denmark to Sweden - Scandinavian Holidays
On the map, it looks very enticing to see a road going across the sea from Denmark to Sweden. Once on the bridge, you will find that it is just the sea out there. However, you can see wind turbines out at the sea generating electricity near the Sweden side of the bridge. This bridge joins Copenhagen through to the City of Malmo in Sweden. This bridge comprise a tunnel and a rail track too. It is an engineering feat equivalent to the bridge linking Hong Kong, and Macau to mainland China.
Recommended to see for yourself.