This spaceship-like Serbian monument reaches for the stars in celebration of the fallen fighters of fascism.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

Rusting ships sit in a desert where a sea used to be.

Light still pours into the ruins of this ancient Islamic observatory.

World's oldest and largest space launch facility, once a secret missile testing site.

Former island in the Aral Sea used to be a top-secret Russian bio-weapons facility.

This abandoned mining village was predicted to resist decay longer than any other modern human settlement.

A mad mystery man who led Canadian mounties on a 150-mile wilderness chase is still buried with his secrets intact.

The closest thing to Mars on Earth.

Earth's greatest purely vertical drop at 4,101 feet.

A lake in the middle of the tundra of Quebec is said to be the purest freshwater lake on Earth.

A forlorn fishing village on the coast of Labrador, full of shipwrecks and Spanish gold.

A tiny, picturesque island, where cows and wild horses wander around the houses.

Artistic cabins actually grow deep in the Canadian wilderness.

An ancient Viking village in North America that predates Columbus by 500 years.

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

This attraction was abandoned after the Chernobyl disaster.

The largest collection of death masks in Ukraine.

Like something out of a bad acid trip, this Ukraine hallway has been covered in hallucinatory phantasmagoria.

The deepest metro station in the world.

One of the largest museums in Ukraine remembers the story of the German-Soviet War in iconic, brutalist style.

A forgotten remnant of the Soviet Union, Transnistria is an unrecognized country hidden behind a heavily militarized border between Moldova and Ukraine.