This decommissioned nuclear power plant offers tours of its Communist-era control room and reactor hall.

This small exhibition displays equipment and artifacts once belonging to the feared Stasi secret police.

A tiny basalt mountain with an observation tower overlooking the beautiful Bavarian countryside.

Hidden in the forest are the crumbling, graffiti-covered remains of the factory where most of Germany's explosives were produced during World War II.

The last Tsar of Russia constructed this private church just so he could attend services when visiting his wife's hometown.

This natural history museum houses one of the world's largest rat kings, a terrifying jumble of tangled rodents.

A surprisingly detailed model of one of the most powerful telescopes in the world.

This German "living museum" is maybe a bit too immersive.

Dedicated to the European Sinti and Roma peoples murdered during the Holocaust.

Constructed by forced laborers, this submarine pen is now a museum and war memorial.

This 18th-century folly is one of Europe's rare "garden mosques."

On the highest peak in the Harz Mountains, science and the occult faced off in a failed attempt to turn a goat into a boy.

This outdoor library provides around-the-clock access to around 7,000 books.

During World War II, the Nazis repurposed this beer cellar to store stolen artwork.

A Saxony castle houses one of the largest and most outstanding mineral collections in the world.

Giant wind turbine with observation deck at the very top.

A memorial for a young woman and her ghost, which are claimed to have caused countless deathly shipwrecks.

A varied collection of brains in alcohol.

The monumental home of Prussia’s eccentric "Cannon King."

Tourists often confuse this beautifully ornate former cigarette factory for a mosque.

A top-secret bunker now turned museum, is an eerie look at what life would have looked like in the event of nuclear war.

This East German military command bunker was ready for World War III.

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.

Fantastic views and thousands of love locks.