A WWI fighter plane and turn-of-the-century penny candy shop are among the unexpected features of this Financial District building.

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

Sniff the Titan Arum's rotting flesh.

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

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

A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.

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

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

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

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 loneliest island in New York.

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

Unlock the secrets of the conjuring arts.

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

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

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

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

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

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

A once grand hotel is being retaken by the wilderness it once capitalized on.

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

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

From scholastic to sepulchral - now under reconstruction.

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