What is it about mushrooms that makes people wish they lived inside of them?

This historic iron-working village is now a ghost town so immaculate that it looks as though it was recently built.

The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

Given just one more year to live, Conrad Schuck built his dream house in Bartow, Florida.

One of the largest, oldest, darkest, quietest motel rooms in the world.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

Friction between grains of sand cause a curious "singing" sound.

The first and only carousel with a lineup entirely of insects.

Enjoy a slice while browsing the world's largest collection of pizza memorabilia.

You'll need cowboy boots to trek to this old-fashioned saloon nestled in a giant natural cave.

Mile-long cave system near Great Smoky Mountains.

"The House That Love Built" is shying away from "The House That Ghosts Love."

Only known mainland rookery of the threatened Stellar sea lion.

No one really knows how these old hobby horses got here, but the herd keeps growing.

A unique sculpture park that specializes in the huge and bizarre.

A science teacher's dream.

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

A Texas cave network is home to some of the world's most spectacular-looking and bizarrely named mineral formations.

Half of a waterfall goes into the river while the other half seems to disappear.

Dig for your own trilobites in this goldmine of invertebrates.

Small museum packed with artifacts recovered by the man rumored to be the real-life inspiration for Indiana Jones.

World's oldest operating science fiction and fantasy club, once home to Ray Bradbury and L. Ron Hubbard.

A 19th-century shrine covered with prosthetic body parts as votive offerings.

This crumbling UFO is one of only a few remaining "moveable ski chalets" of its kind.