A steam powered train that runs on city streets.

A small but immensely extravagant palace built by the "Night King."

This unique Renaissance castle was turned into a home for Nazi occultism.

A German apartment building hosting as many trees as human occupants.

The ruins of an abandoned crematorium haunt an eerie deserted German cemetery.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

The ruined remains of the airport Claus von Stauffenberg departed in his failed attempt to kill Adolf Hitler.

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

The fairy tale castle of the "fairy-tale king."

Hitler's bleak vision of relaxation still stands as a mostly abandoned 10,000-room resort complex.

The world's most delightful not-NOT-religion welcomes visitors to the town of Templin, just like its more stoic peers.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

This conical hill was built as a testing ground for an engineer known as the Glider King.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

A century-old shot ball factory tower is open to the public once a year.

The music is over at the Ballhaus Riviera Ballroom, but the ballroom remains in haunting disrepair.

What was once an underground Nazi city is now Europe's largest bat reserve.

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

The home of the morbid art of corpse plastination is open for visitors to view the fascinating, but stomach-churning process.

Solar observatory doubles as a daring display of Expressionist architecture, much to Einstein's chagrin.

A quaint Russian village in the middle of a German metropolis.

A failed attempt to control drifting sands yielded a gnarled sylvan wonderland.