Intensely colorful calcite pools in Southern China.

A fifth-century temple improbably built into the side of a cliff.

Former headquarters of the KGB.

The coldest city in the world.

An 18th century wonder of the world, lost in WWII, re-created at the Catherine Palace.

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

Immortal combat in a Moscow museum.

Dr. Strangelove-esque tours reveal the inside a bunker once reserved for Stalin himself.

Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.

Hop on the train and tour an elaborate miniature town made completely of junk (including the train).

This war hero's old shop remembers the fine line between medicine and quackery during the Revolutionary War.

The highest point in Virginia can only be reached by passing through ponies and flowers.

The birthplace of Appalachia's only first lady, who some have dubbed the United States' "first female president."

Hidden for 165 years inside a building designed by Thomas Jefferson are the remains of what may be America's first educational chemistry lab.

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.

This campus chapel is Robert E. Lee's final resting place and a topic of debate about the legacy of the Civil War.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

A Nessie-like monster supposedly lurks in this lake.

This North Carolina grave is the final resting place of the world's most famous conjoined twins.

Down the road from where the Wright brothers lifted off is another flight tribute practically hidden from sight in the woods.

A six-foot pair of socks hangs from a drawer of the world's largest bureau.

A 120-year-old legend concerning an empty circular patch in the North Carolina woods.

From failed port town to Civil War fort, the ruins of this former defense saw their finest day in the television age.

A water pumping station disguised as a residential home to assuage concerned neighbors now tricks most passersby.