This castle-like building in Manhattan helped destigmatize cancer in the 19th century.

This 220-year-old house is a reminder of New York City's Dutch past.

This study room in the New York Public Library saw the creation of one of contemporary America's greatest traitors.

There are owls with glowing eyes in Herald Square.

The front yard of an Upper East Side town house hides the last fragment of one of New York's most famous theatres.

The one-time epicenter of American songwriting is now a little remembered Manhattan commercial block.

A trove of century-old litho stones from the Puck Building's printing days were discovered behind a cellar wall, and are now hanging in the store.

During the 19th century, you could pay for violence off a prix fixe menu on this Manhattan street.

A Gothic-style abode built to accommodate the church's three resident peacocks.

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

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

The greatest real estate coup of all time.

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

Cheap pizza and all of your naughty bedroom needs housed in a stunning example of Art Nouveau architecture.

The 28-foot granite map plots the locations of 40 theaters in New York City.

What happens here stays here – unless it affects the whole world.

This Fifth Avenue church has long been the favored worshiping place of Broadway actors and vaudeville performers.

Captain America, Sub-Mariner, and the Human Torch were all born in this art deco Manhattan masterpiece.

Beautiful mosaics cover the first stations opened on New York City's newest subway line.

A prohibition era watering hole for the police.

One of the few remaining American elm trees in New York’s Tompkins Square Park was the birthplace of a new religion.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

An annual extravaganza of Broadway theater memorabilia.

There must be a pun in this haystack somewhere...