The largest burial mound in the United States holds the remains of prehistoric West Virginians.

A beautiful hidden gem in central West Virginia.

The museum calls itself the "National Museum of the Paranormal" and is full of eerie oddities.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

Beyond the usual stories that attend old prisons, this one has deep bloody undercurrents.

Despite its lavish ornamentation, and wholesome lifestyle of its devotees, this mountain commune has faced its share of issues.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

The world's longest known cave system.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

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

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

A scenic fort on the harbor protected Philadelphia from an attack that never came.

These lush botanical gardens employ the most purrfect pest control force.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

In which a local geological marvel becomes a quaint roadside attraction.

George Washington's dentures and Queen Victoria's dental instruments are in the nation’s official museum of the dental profession.

An astounding collection of medical specimens, including bits of President Lincoln.

The land is home to swimming ponies and a legendary 18th-century treasure.

A toxic ghost town sitting atop a massive coal fire.