This turn of the century jail once held Charles Manson.

One of few surviving standpipe water towers in the U.S.

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

A kitschy, creepy St. Louis mainstay.

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

A subterranean haunt where wine and homemade biscottis are always on the menu.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

Mile-long cave system near Great Smoky Mountains.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

Live long and prosper in Tennessee.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

A collection of outdoor art by renowned muralist Robert Dafford depicts the history of a flooded city.

Hiding behind a grocery store is a spectacular cavern carved as part of an old limestone quarry.

Visit this playground of waterfalls, caves and sinkholes.

An amazing collection of scale model ships.

This burger joint is named after everyone's favorite carnival prize and is adorned with a giant one over the door.

A retro walk through the history of the tube.

Bison, America's national mammal, are staging a slow comeback in Ohio's prairie parkland.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

This pair of eccentric Ohio castles were built by a pair of brothers who wanted to bring a bit of class to the Ohio wilderness.

A county library in rural Ohio houses one of the finest mineral collections in the world.

Thousands of unique minerals, including some of the most impressive fluorite crystals in the world.

River pirates, murderous bandits, and serial killers used this Illinois cave as their debauched hideout.

Tombstones carved to look like tree trunks are used for multiple generations of family members.