Historical figures from New York City's Catholic community reside in Midtown.

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

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

A collection of fanzines, recordings, and documents detailing the rise and influence of the feminist punk movement.

Built as a gift to the hottest tastemaker of the time, these hidden quarters remain an Art Deco showpiece.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

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

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

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

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

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

The "Seinfeld" diner.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

A hands-on traveling collection of the innovative devices of yesteryear.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

A crumbling hospital from the 1850s on Roosevelt Island.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

Dozens of lights dangle from the branches of what may be the brightest tree in Los Angeles.