This lavish abode was once the home of the inventor of "Gorilla Pants."

A house built specifically to shelter the dead.

This 19th-century building inadvertently preserved the handprints of its builders within its walls.

In 1912, a broken section of the reservoir wall released millions of gallons of water and destroyed many homes downhill.

A 70-foot replica of the famed Eiffel Tower.

A fictional Coupe DeVille built by hand and gifted to the Man in Black himself.

One man’s religious convictions led him to build this stone castle meant to withstand an apocalypse.

A natural sandstone bridge hidden in the Sewanee forest.

Mysterious library of an infamous financier and spiritual seeker.

One of the Cemestos prefab homes built to secretly house thousands of Manhattan Project workers.

This improbable contraption was passed down through five generations of industrious Tennesseans.

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

Abandoned for 60 years, this submerged bridge was completely forgotten until the lake was drained.

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

One man has spent decades faithfully constructing this unique brick and cinderblock castle.

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.

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

This former maximum-security prison is creepy, sobering, and supposedly haunted.

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

This defunct, fortress-like prison has been the setting for several movies.

An abandoned town is hidden in Great Smoky Mountains National Park.

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