One of only two remaining Victorian-era greenhouses in New York.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

Final resting place of the immigrant who brought artificial seltzer water to America.

A curious friendship between two inanimate ladies.

A heartbreaking monument showing the last morning in the life of Jane Griffith.

This seemingly unremarkable boulder is said to bear the hoofprint of the devil himself.

A room hidden behind a swinging shelf in the children's section.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

This Upper East Side apartment co-op was designed as a tuberculosis sanitarium.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

Unrepaired walls from a 1920 anarchist bomb attack.

This vacant church in the Financial District was once the heart of New York's first Syrian immigrant community.

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

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

A partially hidden wall graffitied by spectators of the 1976 Bicentennial, recently rediscovered.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

Where now stands a 42-story condominium tower of marble, glass and steel was once the central market of New York’s slave trade.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

There’s a secret bunker inside the Brooklyn Bridge, but the city won’t say where.

An odd, ancient window that may have once been part of a brutal prison is embedded in the side of New York's Police Plaza.

Revolutionary War casualties fill the only 17th century structure remaining in Manhattan.

This humble historic facade hides a history of boozing and the gentlemanly sport of rat-fighting.

Try not to get slimed in Tribeca.

Twice a day one of these tragic bronze mariners drowns with the tide to remember all those the sea has taken.