A modern addition to the Greenpoint skyline.

Red frames showcase remnants of one of New York's original subway stations.

A grand New York post office that is home to mailman Santas, scraps of postal history, and a pneumatic mail system.

This Art Deco fortress in upstate New York gives Manhattan's vaunted examples of the style a run for their money.

A crumbling staircase in upper Manhattan is all that remains of one of the most important sites in sports history.

The notorious headquarters of a corrupt political machine.

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

The site of the deadly Triangle Shirtwaist Factory Fire.

The oldest continuously inhabited street in America.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

This abandoned subway station can still be seen on regular commuter trips.

The saddest little diner in New York.

Named the fifth most beautiful building in America in 1885, this former courthouse boasts the best view in the Village.

Avoid gangster interaction while window-shopping.

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

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

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.

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

Elevated freight railway turned wildly successful urban park.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

A multi-storied adobe complex has been inhabited for more than a thousand years.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

The boulder on which Alexander Hamilton laid his head as he died can still be visited on the New Jersey coast.

Step inside Lucy, the world's largest "elephant."