Little Red Lighthouse under the George Washington Bridge.

The "Seinfeld" diner.

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

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

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

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

Lie in a hammock where George Washington stood.

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

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

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

Once the tallest building in the world and the site of “the highest dinner ever held in New York” this building now holds the most expensive penthouse in the city.

Tucked away amidst some of the most famous addresses in the world is New York’s only fraction of a street.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

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

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

New York City's smallest piece of private property.

Elevated freight railway turned wildly successful urban park.

Try not to get slimed in Tribeca.

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

The mummified relics of an American missionary.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

The largest fountain in Bratislava.

Former headquarters of the KGB.