Notorious artist squat renovated into legal studios.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

Floating swimming pool within a moored vessel.

Someone loved this song enough to carve all of its lyrics onto a tree trunk in a Berlin park.

The site of the first battle of World War II.

A stone-filled garden in the heart of Edinburgh commemorates the father of modern geology.

The church and nearby castle are all that remains of a medieval village, mysteriously abandoned.

The beams of the New College, Oxford dining hall come with an amazing story.

One of Europe's oldest libraries.

This centuries-old pub boasts a collection of more than 4,500 snippets of neckties from around the world.

This 11th century tower is said to be the oldest building in Oxford.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

This hidden 13th-century tavern room has a few Shakespearean connections.

The charming collection illustrates life in Lincolnshire in the 18th through 20th centuries.

The stoic structure boasts a whimsical set of stained glass art commemorating Lewis Carroll.

Historical figures from New York City's Catholic community reside in Midtown.

A labyrinthine underworld of tunnels and caverns hides beneath the city.

A quirky house created entirely out of glass bottles combines a collector's spirit with an artist's flair.

This tiny hotel perched atop a 50-foot tower really puts things into perspective.

This lonely bronze walrus celebrates a character in a Lewis Carroll poem.

Aliens and monsters lurk inside this museum dedicated to one man's lifelong adoration of all things sci-fi.

In an isolated field near a dilapidated barn stands this chilling portrayal of the plight of the Nuba peoples of Sudan.

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

A mysterious statue of a leather jacket-clad rebel leans coolly on an odd yellow clock.