These mid-century motels once housed the workers who built the Glen Canyon Dam.

These structures were inspired by both Native American shelters as well as, strangely, an ice cream shop.

This metal sculpture is a tribute to the Canadian Pacific Railway, which had a station in the village that has now been converted into a library.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

Home to a forest of whimsical pygmy Coast live oak.

The entire length of the border is marked by a 20-foot-wide slash through the trees.

Jule Körner's house full of bizarre architectural details.

A short hike into the mountainside forest reveals a decaying 1890s town.

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

Despite being burnt down multiple times, the ruins of this South Carolina church are still standing.

A haunted hot springs hotel that went from healing retreat to asylum before it was restored.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

A crumbling hospital from the 1850s on Roosevelt Island.

The old Route 66 town straddling Texas and New Mexico died along with the Main Street of America.

Odd outsider art installations surround a Gold Rush-era ghost town.

This amazingly preserved Gold Rush town is a historian's dream.

A Beaux-Arts triumph set to become Ford's innovation campus

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

See just what life was like in a 19th-century prospecting town.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

Oh, just a motel on the edge of the desert decorated with thousands of clowns conveniently located next to an abandoned graveyard.

Live long and prosper in Tennessee.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

More than five miles of underground passageways.