A hyper-luxurious, 12,000- square foot home might be buried beneath Queens, still waiting to protect you from nuclear missiles.

A charming "tea atelier" hidden away in Greenpoint, Brooklyn.

Unrepaired walls from a 1920 anarchist bomb attack.

Cryptic messages embedded in the New York City sidewalk.

New York City's only preserved family home from the 19th century.

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

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

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

From scholastic to sepulchral - now under reconstruction.

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

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.