A dark, dank room in subterranean Manhattan was the site of a ghastly murder.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

A hip bar decorated with walls of golden skulls.

This former Norwegian sailor's church is slowly being taken over by ramshackle robot musicians.

Nondescript elevator doors open to reveal a stunning, surreal world.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

Sniff the Titan Arum's rotting flesh.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

Ride the subways of yesteryear.

A New York garbage depot holds a secret collection of weird and wonderful refuse.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

Bermuda triangle lighthouse, site of mysterious disappearances, left to crumble into the Atlantic.

Florida castle built with aluminum printing plates.

This ancient sinkhole-turned-healing-pool is a treasure trove of archeological discoveries and may even be the Fountain of Youth.

An underwater road considered a possible Atlantis location.

One man's love of sea life and art has turned his home into a temple of outsider island art.

A steamer run aground near Bimini lives a second life as a playground for scuba divers.

This spooky road cut through a mound of ancient coral might be haunted by a witch.

A failed, un-built suburb that has been going feral for decades.

The largest retailer of seashells in the world.

The oldest house of worship in Palm Beach has a wonderful tropical garden.

Get up close with some alligators at this roadside farm attraction.

Just below the surface, shrimp are producing temperatures hotter than the sun.