This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

This "second" cemetery represents New Orleans' attempt to keep cholera at bay.

An abandoned town of skeletal wooden homes.

Hitler's bleak vision of relaxation still stands as a mostly abandoned 10,000-room resort complex.

One of the most accessible undersea plane wrecks in the world.

This dark, quiet forest on the outskirts of San Diego is dense with rumor and lore.

A mining town once rife with murderous disputes over its copious treasures now creates income as a popular spot for photo shoots.

Five miles of underground river link lake to ocean.

A lush desert oasis in the shape of a narrow crescent.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

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

These fantastically named natural pools look like something out of a Scottish myth.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

These spooky and unusual stone formations create an underworldly landscape.

This floating cinema brings new meaning to the phrase "going out" to the movies.

Cockatoo Island is a Heritage-listed island in the middle of Sydney Harbour.

A naturally beautiful, seemingly bottomless deep blue spring.

The final stronghold of a king whose feet never touched the ground.

Abandoned soda factory on a Cambodian roadside in a state of beautiful decay.

The oldest of Venice's plague quarantine stations, designed to keep the medieval city safe from disease.

A picture-perfect town, perfect for blowing up.

Rare signs of the former Soviet Union in the Caribbean, though not where you'd expect them.