The most confusing clock in New York.

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

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

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

A popular European tradition makes its way to the states on one of America's most famous bridges.

Lie in a hammock where George Washington stood.

Everyone from Mark Twain to Teddy Roosevelt has a pipe hanging from the walls of this historic chophouse.

An artist's cute bronze subway sculptures belie his violent artistic past.

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

Visit the monolithic tomb of America's most famous general.

Rummage through this sunken ship, but leave your scuba gear at home.

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

Slyly buy a shake in the Parker Meridien lobby.

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

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

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

An unassuming secret door once led to a legendary watering hole.

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

One of only two commuter aerial tramways in the United States.

A semi-scholarly approach to sex.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Elevated freight railway turned wildly successful urban park.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.