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

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Abandoned power station once home to a squatter community, now being developed into an arts center.

The walls are decorated with whimsical murals painted by the creator of the Madeline franchise.

Neon signs that grace the windows of Bergdorf Goodman's and Tiffany & Co. come from this studio in Brooklyn.

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

The loneliest island in New York.

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

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

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

Unique antiquarian shop specializing in globes, maps, and prints.

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

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

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

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

One of the last Jazz Age "Wonder Theaters" in New York City.

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

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.

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

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

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

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

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