A Belle Epoque bordello turned into a themed love hotel.

Inside a former cabaret, seven floors of erotic art.

This former medical factory gives home to cutting edge arts in the shadow of a gas works.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

An eerie, derelict amusement park in Berlin.

A surreal museum of extraordinary industrial objects.

Model Trains and Much More in Hamburg.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Executed in 1401, Exhumed in 1878, Stolen in 2010.

Preserved "bog person" that is over 2,000 years old.

Nightmarish example of the unintended consequences of weapons testing.

Launch site for nuclear war against Western Europe.

18th century opera in its original splendor.

Mysterious craters may have been home to an ancient cult.

Early habitat dioramas and home of the elusive gaff, the skvader.

The internet as provided by a James Bond villain.

Sweden's first nuclear reactor, R1, can be visited 25 meters underground.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

A church of bones, decorated with 40,000 human skeletons.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Research station devoted to mysterious floating lights seen in a Norwegian valley.