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

How a century-old glass factory in Queens became a concert venue and arts center.

This Upper East Side apartment co-op was designed as a tuberculosis sanitarium.

An art installation commemorates journalist Nellie Bly's undercover reporting inside a New York asylum.

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

After surviving abandonment, this powerful Latin American mural is alive again.

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

One of the few Glatt kosher delis in the United States is a cornerstone of its Hasidic neighborhood.

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

A vibrant, 100-foot-tall mural dedicated to Evelyn Nesbit, the tragic icon of the Gilded Age.

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

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

Volunteer-run library dedicated to exploring five decades of activism history.

This interactive gallery makes you feel like you've stepped into a fantasy world filled with whimsical monsters.

Here, exhibits come with a side of edible history.

Supremely flaky treats await at Amadou Ly’s boulangerie and patisserie.

The world’s largest collection of Tiffany glass sits in a warehouse in Queens.

Cryptic messages embedded in the New York City sidewalk.

This museum-within-a-museum pays tribute to "The World's Most Experienced Airline."

The former estate of the Guggenheims, part of the opulent Gold Coast that inspired the Great Gatsby.

A museum that houses a collection of stenography machines plus dozens of books, photographs, and guides to shorthand languages from around the world.

An approximately 500 million-year-old rock outcropping covered in fossilized bacteria.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

Historic town settled in the 19th century because of its convenient location along a popular coal transport route.