This sinkhole was created by a tragic industrial accident and continues to ravage the surrounding landscape.

This museum chronicles the history of a leprosy quarantine hospital that then became a refuge.

Pirates had to be ousted from the land where this now ruined Louisiana fortress was built.

World's largest precision optical instrument used to detect Einstein's elusive gravity waves.

Religion and personal struggle gave birth to this collection of concrete angels.

This Mississippi seminary was the first in America to train Black Catholic priests.

One man built this shrine in the 1970s to pay tribute to a miracle he had witnessed.

A Cajun-style Christmas on the river also involves sky-high pyres and explosives.

This 19th-century sugarcane plantation is one of the most well-preserved estates of its kind, including its original quarters for enslaved laborers.

Legend says a primate-like cryptid prowls this otherworldy sliver of the Louisiana bayou.

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

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

One of the longest water bridges in the world was built over a supposedly haunted swamp in Louisiana.

A museum of unusual collections, mini-towns, and a half-dog, half-alligator.

All that remains of this small town is its mass grave and a myth of a voodoo priestess who predicted its demise.

The crumbling remains of a 19th century fortess.

The world-record holder for the longest bridge stretching continuously over water.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

A private museum dedicated to preserving the heritage of Mardi Gras' most beloved underdog parades, open by appointment.

Before becoming a public park, this spot was a shell midden, a fort, and an amusement park.

An abandoned underground bunker not far from downtown New Orleans.

A prime example of New Orleans' unique architecture these early 20th century homes were built to look like steamboats.

An otherworldly musical haven in The Big Easy.

A 19th-century shrine covered with prosthetic body parts as votive offerings.