The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

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

This "Plant Farm Museum" is home to the divinely inspired and visionary outsider artwork of Reverend Howard Finster.

A mysterious drive-in nestled in the forest that leaves little to the imagination.

Over 600 vacuum cleaners stack the shelves of what may be the cleanest museum in America.

Park filled with machinery that drove the southern agriculture and oil industries forward.

The granite monument is engraved with the image of the talking horse's head coming through a barn door.

A natural history museum with an extensive collection of bird dioramas.

What better place to take a seat?

Crumbling ruins mark the site of a couple's grisly murder in the woods.

Twenty-year effort to raise a castle using tools and techniques from the 13th century is now abandoned in the Arkansas woods.

This award-winning men's bathroom was just too beautiful to not allow women to see.

This replica of the Greek structure is in the heart of Nashville.

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

A key producer of charcoal iron in the early 1800s, the structure still stands today.

Everyone and everything one man ever loved and lost, now stare into the East for all eternity.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

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

A hillbilly theme park that proved so unpopular the land wouldn't even sell on eBay after it closed.

What else would you call a playground hidden in Alabama's oldest and largest cemetery?

An abandoned early-20th-century boomtown sits within the Calico Rock city limits.

The world's largest collection of porcelain "veilleuses-theiere," or night light teapots, includes four that belonged to Napoleon.

An ever-growing collection of rare and strange objects owned by local Arkansas illusionist Maxwell Blade.

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.