A menagerie of concrete animals brought together from across New York City's parks.

In 1986, Keith Haring was arrested for painting this anti-drug mural on a Harlem handball court.

Those belting out show tunes might not realize this piano bar marks the site where Thomas Paine died in 1809.

This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.

This diesel train serviced the Brooklyn waterfront for more than three decades.

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

The smallest island in Manhattan is a manmade landfill dominated by a Buddhist peace arch.

The ballpark in "Pigtown" where the Brooklyn Dodgers made their name was replaced with a huge apartment complex.

The lesser-known Alice sculpture of Central Park dedicated to the “godmother of American children.”

The walls are decorated with whimsical murals painted by the creator of the Madeline franchise.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

The East Village tenement from the cover of Led Zeppelin’s 1975 album has a tea shop on the ground floor.

These sculptures were designed to beautify this neighborhood when it was established in the 1940s.

A commemorative plaque hides a door that leads down to the New York Public Library's underground book bunker.

Home to a dizzying array of letterpress blocks with a rich history.

A hands-on traveling collection of the innovative devices of yesteryear.

The home of one of America's most beloved fictional characters has become a real world landmark.

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

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.

This simple Manhattan salt house is artfully shaped... well, like a giant granule of salt.

This neo-Gothic former auto showroom is one of the few remaining reminders of Brooklyn's "Automobile Row."

A big shiny gin and whiskey distillery in Sunset Park.

A Jewish deli run by Yemeni Muslims in an Afro-Caribbean neighborhood is quintessential Brooklyn.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.