An eerie, derelict amusement park in Berlin.

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

The decaying remains of a 1960s mechanical wonderland that never officially closed.

This Danish castle is supposedly haunted by a woman too independent to not be a witch.

Four alabaster giants contemplate the tides on the shore of Denmark.

A perfectly circular stronghold constructed in the 10th century is now a nucleus of Viking culture housing a museum, village, and reenactment of an epic Viking battle.

A delightful but little-known public observatory and planetarium in Munich.

A small square plaque marks a failed assassination attempt that could have changed history.

One man's personal kunstkammer, museum and shop.

A stairway to heaven, or to nowhere at all.

In Egypt's expanding metro area, many of the neighbors are dead.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

A World War II torpedo launch station abandoned off the Polish coast.

This tower in a small Polish village uses the power of a sacred bell to ward off mischievous weather spirits.

A collection of old neon signs from all over Poland line a secluded courtyard.

Polish luminaries and masterful folk art find sanctuary in this unique cemetery.

Crosses of all shapes, sizes and colors litter the mountain, the site of a huge yearly Orthodox pilgrimage.