Sure, you've been in tunnels before while driving. We all have. But have you had to ride an elevator to get to one while still sitting in your car? That's much less likely, but it's exactly what you have to do if you want to use Hamburg, Germany's tunnel running under the River Elbe.

The nearly 100-year-old tunnel sports giant elevators at either end, lowering autos 24 meters down to tunnel level from the ground. At the other end, they get raised back up to go on their merry little way. Clearly, it's an insanely inefficient way to do things, which is why you don't see other elevator tunnels around. Due to its curious nature, however, it draws people to it all year round and is a popular route for pedestrians and cyclists. Cool!

Hamburg, via DeputyDog