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

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

This enormous banquet-themed artwork honors over 1,000 notable women throughout history.

Crammed into several rooms of a Staten Island home, this museum is a vodka-soaked paean to the pleasures of drinking.

In the middle of suburban Staten Island, a nearly 150-year-old bakery is preserving the art of a disappearing New York treat.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

A no-frills cinephile haven known for showing offbeat, underseen films.

Cryptic messages embedded in the New York City sidewalk.

Have a steam and some blini at this cafe in a century-old bathhouse.

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

The factory for the popular Dumbo location, the Greenpoint shop is a quiet gem.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

A dark, dank room in subterranean Manhattan was the site of a ghastly murder.

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

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

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

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

Become a prohibition rebel.

A very classy 1920s-era bar right in Grand Central Station.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

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

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

A crumbling hospital from the 1850s on Roosevelt Island.