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

This domed temple was built in a hidden cave mouth as a refuge for sinners seeking absolution.

Large-scale contemporary artworks tower over fields and lurk in forests around a Jacobean manor house.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

This serene, turquoise lake in an extraordinary nature reserve showcases a rare natural phenomenon.

Rows of stone statues are dressed up to mourn children that are lost before birth.

Once a black market electronics marketplace, now an otaku shopper's paradise.

A remarkable lava formation encloses a line of Buddhist statues that can't be accurately counted, according to local mythology.

One family's environment-friendly hobbit-house in Wales.

An abandoned mine now resembles a post-apocalyptic landscape of derelict buildings and blood-red pools of water.

Room 32 of the Alta Cienega Motel has grown into a shrine to the Lizard King.

This submersible road connecting a French island to the mainland is lined with safety towers for when the tide strands travelers.

This unique temple complex remains off the typical tourist trail.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

The largest greenhouse in the world is home to over one million types of plants.

A museum dedicated to the alleged Roswell Incident.

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

A lakeside garden in the Southern Alps full of whimsical artwork and thousands of beautiful flowers.

New Zealand's epic shrine to all things puzzling.

A solitary tree has grown up all alone on Lake Wānaka, backdropped by the beautiful Southern Alps.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

Sleep snuggled in a sphere suspended atop the forest canopy of Vancouver Island.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

The longest navigable underground river in the United States is home to countless blind and albino animals.