A bizarre roadside attraction and the first instance of miniature golf in the world.

The ruins of a resort and casino sit on the banks of this blue hole spring that pumps 70,000 gallons of warm, clear water every minute.

All that's left of the quintessential "cabin in the woods."

A natural sandstone bridge hidden in the Sewanee forest.

An ancient cave system in Tennessee’s Appalachian foothills converted to a 1,200-person music venue.

This stone incorrectly marks the 35th parallel, causing some territorial kerfuffles.

This popular park is home to a sea serpent sculpture that now overshadows the twisted history of its creation.

In one of America’s oldest mountain ranges, a long-awaited section of a scenic highway is now open to the public.

This park contains one of the largest concentrations of cedar glades, a unique and rare ecosystem.

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

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

The first full-scale tunnel built in America is short but scenic.

This large cave is a summer home to thousands of bats and has a rich history dating back to prehistoric times.

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

Home to drunken tower-climbing goats... seriously.

Walk the whole Mississippi River!

Mile-long cave system near Great Smoky Mountains.

Visit this playground of waterfalls, caves and sinkholes.

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

Enormous lake at the bottom of a unique cave system.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

This protected reserve is home to a rare and beautiful species of flower.

This collection of ferns from across the globe is the largest assortment in the United States.

This wondrous hideaway is suspended in a bamboo forest above a sanctuary for rescued llamas and alpacas.