I found a short cut from the shipyard where we were staying to the city of Hamburg. Would you believe there is a bridge that travels underwater ? The old Elbe tunnel, opened in 1911, is one of the oldest still operating tunnels in Europe.
The tunnel features two 20 ft diameter tunnels 80 ft underground, the tunnels have matching elevators on both ends. The four elevators on either side are capable of carrying two cars at a time. From street level you can climb the stairs down to the tunnels or ride the elevator.
Unlike most urban structures, the tunnel remains clean and bright (or at least bright for being 80′ under water. Terra Cotta tiles depicting sea creatures, garbage and rats (all things you may find in the tunnels). If you’d like to spend private time in the tunnels, you can even rent the tunnel out for private events.