Walk over a 150 year old manhole.

Hidden in an ordinary Midtown building is a one-room museum dedicated to the greatest escape artist.

A legendary speakeasy bookstore returns from the brink.

Play heads or tails with thousands of different coins.

The oldest Methodist church in the United States has been spreading the good news for over two centuries.

A DIY art gallery/music venue/lecture hall dedicated to video game culture.

Tucked in the back of this amazing antique store is an important piece of medical history.

Manhattan's Thirteenth Avenue was made on landfill then deliberately destroyed — apart from one small, obscure block.

Everyone from Mark Twain to Teddy Roosevelt has a pipe hanging from the walls of this historic chophouse.

A living archive of urban activism and space reclaimed.

This nearly invisible wire transforms much of the city into one big, symbolic home on the holy day.

America's oldest Eastern European synagogue provided the immigrants of crowded Lower East Side tenements a space of sanctuary.

A museum collection honoring the long history of the FDNY is held in a disused Manhattan fire house.

This hidden library of physiological ephemera contains centuries worth of knowledge on the vim and viscera of the human body.

This was one of the first (and last) university-built and operated nuclear reactors.

This giant boulder is sandwiched between apartment complexes in upper Manhattan.

Hiroshima survivor on Riverside Drive.

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

A playground the size of a city block is a modernist monument to civic values and public housing.

New York City's only wildlife rehabilitation center treats more than 3,000 feathered and furry patients each year.

This lavish room at NYC's French Embassy is a rare relic from the end of the Gilded Age.

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

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