One of the most easily accessible examples of the rare 1960s UFO houses.

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

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

There are two dozen tanks just sitting in an open field in Lower Saxony.

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

Enter the cabin of a life-sized Hindenburg replica.

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

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

A former ironworks that was the first UNESCO industrial site.

The oldest Jewish cemetery in Europe survived Hitler's Germany.

Remnants of an exploded schooner and wrecked submarines form a breakwater.

This ancient ruined monastery has been destroyed by fire so many times that it seems like God hates it.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

The industrial monstrosity known as Bagger 258 is a colossal mining machine built in the DDR - but now left for dead in a German field.

This Nazi-built amphitheater was constructed on a sacred mountain site used by various German cults.

An abandoned swimming pool decays on the outskirts of Berlin.

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

The prototype for all Nazi concentration camps.

Berlin's old airport.

No need to strap in for a "ride" on this walkable roller coaster.

A long spiraling walkway winds through the woods, and around a copper beech tree at the center.

Between Neo-Pagans and Neo-Nazis, these strange rock formations have a curious cult following and a very strange history.

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

A stairway to heaven, or to nowhere at all.