This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

This magnificent Cincinnati graveyard is also a popular public park.

This huge clock made of flowers and simple machinery was once used a political weapon.

An experimental, automotive replica of Stonehenge.

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

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

A castle built by an eccentric medieval enthusiast in rural Ohio.

This massive store is home to an eccentric collection of vintage, retro, and peculiar goods.

Civil War soldiers, captains of industry, and paupers all interred on historic grounds.

The world's longest known cave system.

The magic's in the hole!

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

This humble star-gazing center touts itself as the "Birthplace of American Astronomy."

A Circus legend leaves an unexpected endowment.

Kentucky's anomalous peninsula projecting into the Mississippi River, site of legendary earthquakes and local feuds.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

Moonbows over Kentucky.

Rabbit Hash is a heaping slice of Americana from another era, with a very peculiar origin behind its unusual name.

World's largest collection of Coke-related items not held by the Coca-Cola company.

A toxic ghost town sitting atop a massive coal fire.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Enjoy an overnight at an old haunted B&B site of the Borden family murders.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."