Former headquarters of the KGB.

Medieval torture techniques with a modern conscience.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Where Stoddart and Connolly suffered in the infamous Bug Pit.

One part local history, 99 parts gruesome haunted house.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

Time capsule of a museum, in which the Soviet Union remains alive and kicking.

This massive glowering Lenin head gazes out over eastern Siberia.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

18m long sarcophagus of a constantly growing dead prophet.

These "anatomical machines" are only one of the many strange items in this Italian crypt.

The quintessential Japanese rock garden has existed for more than 500 years.

Quite simply the largest tree in the world (by volume).

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A fantastic assortment of China's finest and most disturbing wares.

A station built to repel pirates now attracts wealthy vacationers.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

Teeming with illegal goods and services, this towering maze of vice is also a popular tourist accommodation.

This legendary city has been a tourist attraction for centuries.

Ancient snack bar of the Roman Empire re-opened.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

A Nesting Doll of Churches.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

This building holds the embalmed remains of the leader of the Bolshevik Revolution.