An artist's cute bronze subway sculptures belie his violent artistic past.

Spinning silently in the lobby of an Art Deco masterwork is a massive vintage model of the Earth.

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

Lie in a hammock where George Washington stood.

Cryptic messages embedded in the New York City sidewalk.

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

The oldest surviving synagogue in New York City is now a soaring art space.

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.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

Mysterious 500-year-old tapestries depict a unicorn hunt.

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

A celebration of capitalism in Midtown.

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

A miniature rainforest is growing inside of a Midtown Manhattan office building.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Elevated freight railway turned wildly successful urban park.

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

Try not to get slimed in Tribeca.

A crumbling hospital from the 1850s on Roosevelt Island.

The world's only and thus largest collection of its kind celebrates everyday wonder through simple umbrella sheaths.

This tiny patch of arid sand sits in one of the greenest states in the United States.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.