According to one local tradition, the entrance to the Voodoo underworld can be found in New Orleans through seven gates scattered throughout the city's French Quarter.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

The crumbling remains of a 19th century fortess.

Once defending the city of New Orleans from invasion by sea, this fort faces an uncertain future.

This abandoned Civil War fortress is slowly being swallowed by the waters of Lake Borgne.

This historic New Orleans cemetery is the final resting place of members of the Independent Order of Odd Fellows.

The second oldest continuously operating bar in Louisiana.

This bar named after the world's first mixed cocktail was home to one of New Orleans' most notorious politicians.

The land is home to swimming ponies and a legendary 18th-century treasure.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

After hundreds of years of settlement, this once-bustling fishing village sunk into the Chesapeake Bay.

Town full of spiritualists, some of whom are mediums, is still in full swing after 130 years.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

America's first public mental health facility.

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

The ruins of a cotton mill that was burned in the Civil War are still hidden in a Georgia forest.

Famous for its bio-luminescent inhabitants, known as "Dismalites" .

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

This landmark cemetery in Boston was created more than 300 years ago.

The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.