The "last unrestored grand mansion of Savannah" is now a cramped, mouldering maze of antiques.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

The secret city built by the Manhattan Project.

A psychological self-portrait in the form of a giant, segmented head.

4,000 monkeys used for medical testing on an island off of South Carolina.

One man's extraordinary topiary garden in a small South Carolina town.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Exact replica of the ancient monument, but much, much lighter.

These rows of World War II-era bunkers were the scene of some of the infamous Mothman sightings.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

The only recreation of William Shakespeare's indoor playhouse.

America's post-nuclear-attack chambers of Congress.

A historic coal mine that doubles as a museum and tourist attraction.

This abandoned amusement park was built on a site with a dark history.

Beside some power panels, a plaque celebrates the history of an alternate world.

The beauty of urban decay, hiding some dark secrets.

3/4-scale model of the White House in Atlanta, Georgia.

The remains of one of America's first radiation testing grounds still rest ominously in a Georgia forest.

This red-eyed chrome beast pays homage to the popular modern myth of West Virginia's insectoid monster.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

The "mysteries" of this quintessential roadside oddity were almost destroyed by neglect but were saved by fans of kitschy wonder.

An abandoned asylum incorporated into a college campus.

A small storefront museum explores the history and myth of West Virginia's famous urban legend.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.