What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

Erosion and time have created a naturally-formed water park.

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

The final remnant of the Arkansas zinc industry is this historically protected ghost town.

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

A whimsical tower with a spiral staircase, inspired by the Space Age and the Möbius strip.

A unique attraction and museum dedicated to exploring iconic roadside structures.

Home to Hollywood history and a very special salt crystal.

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

The show pony of cave systems, Fantastic Caverns manages to live up to its name.

A warning to the weak-kneed: This narrow bridge does its swinging eight stories high.

A mysterious light of unknown origin on the backroads of Missouri.

A single artist is behind these large-scale models made of hundreds of thousands of two-inch wooden matchsticks.

Destroyed by flood waters, prison now serves as a training ground for armed forces.

A lifetime's accumulation of bric-a-brac and kitsch.

Curious cave that stays a cool 56 degrees all year long.

The world's only three-story rotary jail is now a museum to a bizarre trend in prison design.

A geological oddity formed by two rivers carving out a mass of limestone on both sides.

A number of gruesome unsolved murders have turned this simple home into a morbid tourist trap.

This historic cliffside mansion uses a natural cave for air conditioning.

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

The ruins of a 19th century shelter run by the Independent Order of Odd Fellows.

This abandoned prison castle has become an imposing gallery of graffiti art.

An abandoned concrete jungle surrounded by a lush park.