This Amazing Bridge Turns Into a Tunnel and Connects Denmark

and Sweden

The Øresund is an engineering marvel that connects the Danish capital of Copenhagen to the Swedish city of Malmö.

A cable-stayed bridge runs nearly 8 km (5 miles) to an artificial island where it transitions into a tunnel that runs another 4 km (2.5 miles).

The award-winning double-track railway and motorway opened on July 1, 2000.