Countless grotesque faces stare out from this eerie Prague art wall.

Tucked away in a Prague park, a statue beloved by romantics honors a poet so nice they buried him twice.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Macabre astrological automaton clock dating to the late 1400s.

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

A collection of anatomical samples from one of the first anthropologists to suggest that humans reached North America by crossing the Bering Strait.

This artificial cave looks like something out of a fairytale.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

Germany's Glienicke Bridge has a shady history of clandestine meetings, espionage, and spycraft.

The "Prussian Versailles" that is as glorious today as when it was built.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

The most visited, and possibly most controversial, museum in Germany.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

Ruins of a German Castle on top of a towering stone pillar.

This stone amphitheater was once part of Nazi Germany's plan to promote propaganda.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

This modern arts center is built around a gem of late-Baroque architecture.

A shining memorial to a Belgian hero is said to bring luck to anyone who touches it.

This Greek temple, open only an hour a day, was the site of a war of tastes between an architect and an artist.

Medical history with an amazing, if frighting, collection of wax diseases on display.

Nature is slowly overtaking this disused cemetery on the outskirts of Brussels.

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

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