Jesus' footprints and the first catacombs in the world.

2300-year-old Roman road connecting the empire.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The yawning maw of this pagan visage is said to bite off the hands of liars.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

World's only telecommunication tower with a wooden pinnacle.

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

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

Take a walk in a recreation of ancient Rome.

The world's biggest pet store.

Metro station with a claim to rock n' roll fame.

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

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

The Bauhaus-style former industrial complex is considered the world's most beautiful coal mine.

Cold war icon and onetime "hole" in the iron curtain.

Twisted buildings adorn the banks of the Rhine river.

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

A 12th-century fortress containing some of Berlin's oldest buildings.

This 600-year-old home seems to defy physics.

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

An industrial relic is now one of Europe's most staggering art spaces.

This temple to the sturm and drang of Richard Wagner contains a dragon's cave and reptile zoo full of living "dragons."

This former steel and coal plant is now a neon-lit industrial fantasia.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.