Nikola Tesla's former home contains an homage hidden from plain sight.

Unlock the secrets of the conjuring arts.

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

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.

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

From scholastic to sepulchral - now under reconstruction.

The beautiful tunnel that ran from the lobby to Penn Station is still hidden underneath 34th Street.

The loneliest island in New York.

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

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

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

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.

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

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

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

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

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

A very classy 1920s-era bar right in Grand Central Station.

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

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.