This New York holdover was built to provide housing for shopgirls and still does not allow men above the lobby.

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

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

A prohibition era watering hole for the police.

A plaque immortalizes the spot where the early American spy said his famous last words: "I only regret that I have but one life to lose for my country."

A famous songsmith's custom piano, dubbed "High Society," is hidden just out of sight in one of New York's finest hotels.

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

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

Hiroshima survivor on Riverside Drive.

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

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

The highest point on the island known for buildings that touch the sky.

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

Long-forgotten artifacts give incredible insight into New York's most glamorous hotel.

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

One of the city’s oldest watering holes was originally the home of a famous James Brown (not that one).

A posh members-only club with a literally dramatic history.

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

A sculptural commentary on capitalism pokes up from the East River.

The first piece of public art dedicated to LGBT rights.

Imagine having a street run right through your home, or better yet, a historic bridge three stories high.

Little Red Lighthouse under the George Washington Bridge.

Phil Mortillaro uses keys to bring art back to the Village.