The commemorative stone column conceals a secret laboratory.

The London statue that imitates passersby.

The 2,000-year-old beam is tucked within the pedestrian entrance to the old London Bridge.

The last remaining example of the boatmen's perches that once dotted the south bank of the Thames.

Murals of the wild parties once held on the frozen River Thames.

Iconic pyramid from famed British architect Norman Foster designed to represent all of the world's religious faiths.

These ancient pecked images are among the oldest and best-preserved in Mongolia.

The last stop in southeast Russia.

Social outcasts and cannibalism in Stalin's Soviet Union.

A "station to nowhere" marks the site of a Siberian subway project that never saw the light of day.

Unusual, mushroom-like rock formations caused by weathering and water erosion, set to disappear, according to geologists.

A collection of Lenin busts and other Soviet Era statues sit idly behind the Semipalatinsk Hotel.

A statue of traditional Kazakh dancers adds some beauty to this Soviet-era mining city.

This cuddly rodent has a place of honor at a Russian institute for genetic research.

Largest man-made excavation on earth!

Russian Orthodox church built on an Antarctic island.

The world's second-largest excavated hole.

Siberian ghost town built by gulag prisoners.

Siberian whale bones stand as cairns marking location of an ancient butcher yard.

This massive glowering Lenin head gazes out over eastern Siberia.

Home of Vissarion, the "Jesus of Siberia."

This remote lake in Siberia supposedly contains a fearsome sea monster.

Russian researchers who have been excavating ancient squirrel burrows may have brought a 32,000-year-old plant back to life.

One of its engravings is believed to be among the first representations of medical and surgical instruments.