Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Yo, Adrian!

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

A hospital where antique dolls are given new life.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

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

An abandoned underground bathroom is now a space for public art.

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

Take a walk in a recreation of ancient Rome.

Hamburgers are intensely proud of their tunnel beneath the river.

Be it nature, art, or abandoned military architecture this eclectic German "museum" has you covered.

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

Twisted buildings adorn the banks of the Rhine river.

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

A unique hanging cable-car navigates through Dresden, the oldest suspension railway in the world.

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

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

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

No need to strap in for a "ride" on this walkable roller coaster.

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

Explore the complex ecology of this multifaceted nature preserve by riverboat.