The only remaining U-boat that is still floating never actually saw any action in World War II.

Giant wind turbine with observation deck at the very top.

Tiny castle in the middle of the Rhine made you pay to pass.

The narrowest street in the world is in danger of closing up entirely.

An exquisite panometer representing Dresden as it was from 1695 to 1760.

A Neolithic burial site erected around 3000 BC.

This watchtower once presided over the Berlin Wall.

A ruined castle stands atop a hill surrounded by dragon lore.

The monumental home of Prussia’s eccentric "Cannon King."

The NASA scientists behind Apollo 11 started out developing Nazi weapons at this abandoned German rocket factory.

This fountain of a little boy that spits on passersby at erratic intervals is a town icon.

The bells remain in a shattered heap exactly as they fell when the church was bombed in World War II.

This East German military command bunker was ready for World War III.

Now overgrown, these anti-tank barriers from World War II are sometimes called "dragon's teeth."

An officers prison camp believed to be impregnable by the Germans saw over 30 successful escapes.

The sweet story of how American cargo planes became known as "Candy Bombers" during the Berlin Blockade.

From Ancient Rome to WWII, Neupfarrplatz has over 2,000 years of history underneath its main square.

A giant snail sculpture looking longingly at the German traffic museum.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

In this brilliant blue spring in Germany, legend has it that a sad mermaid learned to finally laugh.

The small alleys in Lübeck's Old Town are a result of medieval urban sprawl.

The scars of World War II are preserved on its walls.

There are two dozen tanks just sitting in an open field in Lower Saxony.

A preserved Nazi labor camp now has a Holocaust museum on site and memorials to the thousands that died while imprisoned at the camp.