These Stalin-era industrial 'death traps' hang lifeless above the city

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

The rusting hulk of a hand-powered, nearly 160-year-old submarine abandoned in 1869 due to the ravages of decompression sickness.

Monsters and miniatures are held in equal esteem at this wondrous museum.

Where commuters walk through remnants of an ancient Greek necropolis.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

Hundreds of hidden passageways weave through the old quarters of Lyon.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

The remnants of an early American attempt at missile defense.

Museum of science fiction, utopias, and extraordinary journeys of the mind.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

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

Cold war icon and onetime "hole" in the iron curtain.

A surreal museum of extraordinary industrial objects.

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

A charming flea market shop dedicated to retrofuturistic apparati.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

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

France's national museum of scientific and industrial instruments.

A museum of magic with a Sadist past.