This giant boulder is sandwiched between apartment complexes in upper Manhattan.

A tunnel with windows, so you don't miss out on the impressive views.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

A historic casino where Dostoyevsky is said to have lost it all on a single spin of the roulette wheel.

The oldest attraction in Disneyland is a prehistoric stump that Walt may have bought for his wife.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

The remains of the iconic train crash from the movie The Fugitive can still be found rusting along the Great Smoky Railroad.

400-year-old garden, restored to beauty.

Inside this former medieval prison is a collection of objects designed to inflict unbelievable pain and suffering on the human body and mind.

This abandoned bridge to nowhere stands secluded in the woods of a Cleveland suburb.

An abandoned underground bunker not far from downtown New Orleans.

A typical "Old South" manor, once owned by author Anne Rice, served as the setting for several of her witchcraft sagas.

This unique shop is full of memento mori art, antique medical equipment, secret society paraphernalia, and historical relics.

The tallest monument in a historic New Orleans cemetery was prompted by romance and dash of pettiness.

This spectacular track has run continuously since 1882.

Tour the original street level of Port Angeles, buried underground in 1914.

After the parade, students throw their beads on the tree hoping for good luck on exams.

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

Despite the ever pressing encroachment of urban sprawl this grand New Orleans manse still stands.

This frequently-photographed waterfall takes only a short hike to visit.