Those belting out show tunes might not realize this piano bar marks the site where Thomas Paine died in 1809.

Bowl in splendor, if you're lucky.

An extensive collection of fine art devoted to man's best friend.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

An exhibition space dedicated to American outsider art created between the 18th and 21st centuries.

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

A hyper-luxurious, 12,000- square foot home might be buried beneath Queens, still waiting to protect you from nuclear missiles.

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

This collection of grinning ephemera has grown from basement to Brooklyn.

A century-old magnolia tree is the only living landmark tree in New York City.

A Jewish deli run by Yemeni Muslims in an Afro-Caribbean neighborhood is quintessential Brooklyn.

Join in a Seance at the Swedenborgian Church.

Discover the taste of mold.

From this desk Al Hirschfeld drew his influential caricatures of the 20th century's Broadway stars.

This speakeasy continues the Prohibition-era legacy of Harlem's jazzy Swing Street.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.

Offbeat arts organization that hosts exhibitions, events, and explorations.

Nondescript elevator doors open to reveal a stunning, surreal world.

Nikola Tesla's former home contains an homage hidden from plain sight.

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

An arcade packed with a rotating collection of unique independent video games.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

Check out the underground party scene at the "Burning Man of Brooklyn."