A giant bisected onion dome remembers the Iraqis who died in the Iran-Iraq War.

A 605-page Quran penned in the blood of a dictator is locked away in a mosque.

This former monument to an invented Iraqi victory was turned into a military camp during the subsequent invasion.

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

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

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

Set sail on a small scale.

Hear the tales of New York's most notorious criminals.

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

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

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

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

Possible relics of the ancient Roman city are hidden in this restaurant's façade.

This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.

Ever wanted the laymen's version of your credit card fine print?

Unrepaired walls from a 1920 anarchist bomb attack.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

More gold than anywhere else, ever.

The oldest Methodist church in the United States has been spreading the good news for over two centuries.

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

Detailed facade of a brownstone in Boerum Hill.

Walk into the 19th century without leaving Brooklyn.

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.

The gilded vestiges of a sterling department store can still be found in a Brooklyn shopping center.