One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

A closed London rail station created to cart away the dead still bears the marks of attempts to make it less morbid.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

Lie in a hammock where George Washington stood.

This semi-hidden Manhattan restaurant is based out of a loading dock.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

Cryptic messages embedded in the New York City sidewalk.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

An unassuming secret door once led to a legendary watering hole.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

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

One of only two commuter aerial tramways in the United States.

Mysterious 500-year-old tapestries depict a unicorn hunt.

A dilapidated dock tells the story of Titanic's missed arrival.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

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

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

A local farm's collection of unusual structures from a now defunct storybook amusement park.

Bar full of oddities, specimens, artifacts and homages to the great dime museums of the past.

This grave marks the passing of a historic Jane Doe whose identity remains a mystery to this day.