A spectacular cave and a beguiling lake.

The hallucinogenic center of the ancient world.

Monasteries on rock pillars, once accessible only by frayed ropes.

The bodies of some early polar pioneers are still buried beneath the harsh snows of the Antarctic.

This abandoned Antarctic base sits nearly unchanged since it was forsaken in the 1950s, just waiting for you to visit.

Largest sub-glacial lake ever discovered.

Southern Ocean waters and glacial forces transform the Antarctic ice into these stunning bridges and caves.

The remains of a doomed Antarctic plane, buried beneath layers of ice and snow, await those willing to do a bit of digging.

This abandoned Antarctic research station is a Soviet ghost frozen in time.

Naked scientists race around the pole in the frigid cold to try to join Antarctica's exclusive 300 Club.

Fire meets ice at the southernmost volcano on Earth.

An abandoned whaling station on an active volcano offers hot springs in Antarctica, surrounded by ruined giants of industry.

Natural time capsule containing an alien ecosystem.

A simple plaque on the facade is the only reminder that the treaty ending the American Revolution was signed inside.

This demon atop the Notre-Dame de Paris looks utterly bored.

With a history of slaughter, feast, and famine, remnants of the pork industry decorate this area--even its church.

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

A subterranean shelter remains intact under a busy Paris railway station.

This Parisian café sticks almost exclusively to an ethos of reuse.

This museum houses an imposing skeleton army comprised of creatures great and small.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

France's national museum of scientific and industrial instruments.