Thirteen sculptures in central Moscow graphically depicting vices of the modern world.

It's hard to believe the dizzying patterns covering this abandoned mine are completely natural.

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

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

This ominous Albanian fortress houses tanks and downed planes as a reminder of their victories over Western imperialism.

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

A medieval bridge stretches over a sulfur-rich river that leads to year-round natural hot springs.

This dizzying tower was built to better broadcast the 1980 Moscow Olympics.

Abandoned Soviet base once stocked with short and medium range missiles pointed at western Europe.

This soviet pilot's graveyard is filled with headstones made of airplane fins.

This old Estonian mine has been kept like a sprawling time capsule of the local shale industry.

The secret cells in the basement of the KGB's Estonian "Grey House" have been preserved as a grim Cold War museum.

The labyrinthine home of the National Archives of Estonia is an experimental blend of architecture, art, and history.

This small Estonian hill is covered in hand-made twig crosses that are said to bring good luck.

Rusted cars, trucks, and buses form a fascinating collection of Soviet-era machinery.

A decommissioned submarine base makes a great space for graffiti art.

Mysterious craters may have been home to an ancient cult.

This eclectic, mosaic-clad home includes a bamboo ping-pong loft and a "Whispermaphones" intercom.

An Elvis superfan built Denmark's own version of Graceland.

An exhibition of preserved locomotives housed in a 1950s depot shows the history of Denmark's railway.

A walkable map of the world, made from soil and stone by one man.

A novel collection of medical curiosities housed in an 18th-century surgeon training academy.

A collection of noses tucked inside an art museum reveals how times have changed.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.