A tiny red pebble marks what may be the quietest outdoor spot in the United States.

This free, take-a-book shop seems like a trick but isn't.

In the middle of the desert, miles from any human life, sat an anomalous pay phone that still magically answers your calls.

While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

A true treehouse near Hawai'i Volcanoes National Park.

Check your calendars; you might be attending a drive-in movie or sitting next to a fashion runway.

A veritable variety of odds and ends.

The first "Hall of Fame" in America was designed by legendary Gilded Age architect Stanford White for what was then the NYU uptown campus.

A notorious punk house turned co-op.

A posh members-only club with a literally dramatic history.

There’s a secret bunker inside the Brooklyn Bridge, but the city won’t say where.

An artist's cute bronze subway sculptures belie his violent artistic past.

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

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

The saddest little diner in New York.

Bowl in splendor, if you're lucky.

This semi-hidden Manhattan restaurant is based out of a loading dock.

A living archive of urban activism and space reclaimed.

An accidentally hidden library containing the ephemeral history of New York.

Prove you deserve to be fed by Kenny Shopsin.

Slyly buy a shake in the Parker Meridien lobby.

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

A WWI fighter plane and turn-of-the-century penny candy shop are among the unexpected features of this Financial District building.