This Virginia railway overpass is said to be haunted by a serial killer in a rabbit costume.

A secretive collection featuring objects that were designed specifically for U.S. intelligence operations.

Paranormal investigators claim this abandoned asylum is the most haunted spot in the eastern U.S.

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

The world's largest version of this iconic puzzle cube is located in Knoxville, Tennessee.

A roadside music shop featuring a confounding series of folk art installations.

A natural sandstone bridge hidden in the Sewanee forest.

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

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

This historic train station has been converted to a locomotive themed hotel.

A delightful park featuring homemade scale replicas of dinosaurs, tucked away in the Tennessee mountains.

This museum gives tribute to the underappreciated "Down-South Submarine."

Over 20,000 sets of spice shakers reveal the surprisingly telling history of our most basic spices.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

The secret city built by the Manhattan Project.

More than five miles of underground passageways.

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

Home of an evil witch famous within southern folklore.

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

An eclectic store sells obscure vinyl recordings of Charles Manson and Jim Jones, along with many other oddities.

A museum dedicated to a unique ecosystem.

Classy up your Big Mac with bow-tied servers and chandeliers at the world's fanciest McDonald's.

A monument to the sheer amount of oddities one can collect over a lifetime.

A museum dedicated to the legacy of Bob Moog and his pioneering synthesizers.