A unique showroom for bathroom fixtures featuring a giant toilet observation deck.

This artistic fountain display pays homage to this area's theatrical history.

This ferry carries passengers across the Rhine propelled by no engine or paddles but by the river's current.

A futuristic rocket marks the spot where three borders meet.

A stonemason's hilarious revenge came in the form of this peculiarly positioned gargoyle.

These paved rills bring freshwater into Altstadt and could spell wedding bells for whoever stumbles into the waters.

A thought-provoking outdoor art installation sits in the seat of German law.

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

A memorial for a racecar driver who died while trying to set a land speed record on the autobahn.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

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

It's said the devil used this mushroom rock as a table for a late-night meal.

This magenta statue commemorates the legendary marriage between a mermaid and the city's founder.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

This Luxembourg cave is covered in cryptic looking marks left by mining activity.

The birthplace of Karl Marx is now a museum dedicated to the communist revolutionary's life and work.

The last bastion of Roman presence north of the Alps looms over a German town.

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

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

Life-sized bronze statues of fictional puppet characters.

The bones of the Biblical Magi traveled to Constantinople and Milan before landing in their current home inside an elaborate golden reliquary in the Cologne Cathedral.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

The largest mosque in Germany.