Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

A beautiful maze marks where three countries meet.

Peek through a transparent pyramid and drink in the mountain made of books.

Inspired by "The Starry Night" this Dutch bike path turns into a glowing work of art each night.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

The world's only museum devoted to the wonders of fluorescence.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

A terrific purveyor of natural history objects and curios.

This fantastical house shaped like a seashell brings aquatic design to architecture.

A quirky and charming restaurant founded by artists.

These azure waters were thought to lead to the Mayan Underworld.

This Czech church doubles as something of a permanent fashion exhibition for a statue of the Infant Jesus.

A former squatter's paradise outside Prague.

An old asylum graveyard that's been abandoned for half a century attracts those seeking a dark thrill.

This bar and museum are devoted to the controversial comic book work of Kája Saudek.

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Walk through Czech history in Prague's largest graveyard.

Macabre astrological automaton clock dating to the late 1400s.

Two stunning 17th-century libraries and a cabinet of curiosities.