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

Amalfi's pre-industrial history is slowly being engulfed by the lush vegetation of the Ferriere Valley.

Ride a boat through this magnificent underground world, which now doubles as a theater.

Virgil's many-mouthed gateway to the underworld.

A submerged archeological park still holds the wonders of a Roman Sodom.

A sulfuric hellscape in southern Italy.

The old church, buried by the 1784 Mount Vesuvius eruption, is a remarkably well-preserved place where people now pray for the souls of the dead.

A crumbling watchtower and a lighthouse overlooks the site believed to be the Sirens' cliff in the "Odyssey."

This museum houses two of Mexico's most impressive Aztec monoliths.

Founded in 1880, this humble brewery still practices a disappearing technique of sake-making.

This futuristic public park includes large sculptures and an artificial geyser.

Hanging over one of Japan's "hidden valleys," these vine bridges must be remade every three years.

This incredible mountainside temple is home to intriguing statues of demon-like creatures.

Fans line up at the crack of dawn for a slurpy bowl of deliciousness at this noodle counter inside a factory.

What's believed to be the country's first shrine is, in Shintō mythology, the annual meeting place of the gods.

Ruins and statues dot the landscape of this tiny island rich with royal history.

This historic hydroelectric power plant in Japan has been preserved and is open to the public.

The traditional houses along the coast of this charming Japanese fishing village allow people to sleep above the sea.

Largest graveyard in all of Japan surrounds a famous mausoleum.

The largest volcanic caldera in Japan holds an entire city in its maw.

This active volcano's siren song to suicide jumpers forced authorities to build a fence.

A steaming, boiling hellscape sources Hokkaido's thermal baths.

This pair of small sea rocks has been "wed" using rope and ancient Shinto tradition.

The world's largest drain sits below the city of Kasukabe, Japan.