Salute the leader of the proletariat.

The site of the deadly Triangle Shirtwaist Factory Fire.

“Invented in Key West, Perfected in Brooklyn."

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

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

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

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

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

Ride the subways of yesteryear.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

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

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

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

A semi-scholarly approach to sex.

Elevated freight railway turned wildly successful urban park.

Try not to get slimed in Tribeca.

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