This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

Brussels' favorite peeing boy has a sister.

A little sculpture with a large wardrobe.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Climb inside an iron crystal magnified 165 billion times its normal size.

Cozy basement bar sports an inventory of over 2,000 beers.

Largest illuminated advertisement sign in the world.

The castle where Martin Luther secretly translated the New Testament from Greek to German while in hiding.

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

This monolithic slab of art metal crowns a German slag heap.

This proud Teutonic warrior rises out of a German forest heralding a victory and measuring lightning.

This dockworkers' lunch joint has been left leaning by a century of storm floods.

This futuristic German television spire is actually the world's largest digital clock.

A portable, wooden replica (minus the hyphen) of Hamburg’s iconic crooked coffee shop.

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

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.

According to a satirical conspiracy theory that persists today, this German city of 300,000 is a hoax invented by the CIA.

Böttcherstraße's bells, extolling Nordic virtues and the great conquerors of the world.

After a nearly successful attempt on Hitler's life, the conspirators met their fate in the courtyard of this Berlin building.

This massive steel pyramid can be entered by a set of jagged steps that let visitors stand in its heart.

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.