This modern labyrinth lies in the shadow of a ruined medieval castle.

This German bone house contains the remains of some 20,000 souls.

Along the banks of the River Rhine lies a park that seems unassuming, but beneath the surface lies a long and fascinating history.

Legendary site where an evil bishop was devoured by rodents.

This marvelous array is one of the largest collections of mechanical instruments in Europe.

The many—66 to be exact—faces of the German forest.

The abandoned mine where American troops discovered a treasure trove of art and artifacts hidden by the Nazis.

One of the only spherical 19th century gas containers left today.

A top-secret bunker now turned museum, is an eerie look at what life would have looked like in the event of nuclear war.

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

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

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

A memorial for a young woman and her ghost, which are claimed to have caused countless deathly shipwrecks.

The highest cold-water geyser in the world.

Centuries of warfare, tragedy, executions, and poetry come together in this 13th-century fortress.

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

Every half hour the eye-rolling clock face sticks out its tongue to mock the good citizens of Koblenz.

A historic casino where Dostoyevsky is said to have lost it all on a single spin of the roulette wheel.

This tremendous timepiece was once the largest cuckoo clock in the world.

The final resting place of the famed German pilot, the "Red Baron."

A rare water-powered funicular, it uses a huge tank of water and gravity to do its work.

While you wait to cross the street at a traffic light in Mainz, you might notice that the light is staring back at you.

A famed artist's inspiring work of peace and tolerance.

These fantastically named natural pools look like something out of a Scottish myth.