Southern exits of the new Elbtunnel.
With 3.3 km, the Elbtunnel, build 1968 - 1975 and opened January 10, 1975, is one of the longest street tunnels under water world wide. It's part of the German Autobahn A7 from Denmark to Austria.
From 1997 - 2002 a fourth tube was added at a cost of 550 million €. You can see her exit just a bit south of the other three.