These quaint French houses dangle precariously over a precipice.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

This crescent-shaped sliver of sand is a magical haven for a herd of feral horses.

A salty red wasteland in Tanzania is a breeding spot for endangered flamingos.

Stunning wetlands ablaze with pink lotus flowers.

The hermits of Karoulia protect their asocial lifestyles by living on the vertical face of a treacherous precipice.

This famous city eluded concrete detection until the early 2000's.

A perfect turquoise lake colored with glacier dust.

Some of the clearest water anywhere in the world.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

Final resting place for hundreds of prisoners of war.

This expansive bridge in the Canadian wilderness was originally just built for friends.

A massive work of modern art that appears to be a crop circle in the middle of the desert.

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

An obscure waterfall that looks like something out of a fantasy novel.

An eclectic mix of influences rot together in harmony in this India necropolis.

A beautiful geyser under environmental threat.

This Elizabethan hedge maze is one of only six in North America.

This conservatory allows a little bit of the tropics to thrive in the middle of a major Canadian city.

An abandoned 19th century quarry in the middle of the woods, remade by unnamed wanderers into a massive series of rock thrones.

A once grand hotel is being retaken by the wilderness it once capitalized on.

Mine shafts and hard pastries await visitors at this massive mountain of salt.