The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

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

The loneliest island in New York.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

A popular European tradition makes its way to the states on one of America's most famous bridges.

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles

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

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

The oldest surviving synagogue in New York City is now a soaring art space.

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

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

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

Sniff the Titan Arum's rotting flesh.

This little museum is built on a theater that was once a wildly elaborate speakeasy.

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

A hip bar decorated with walls of golden skulls.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

A hands-on traveling collection of the innovative devices of yesteryear.

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

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