This little museum is built on a theater that was once a wildly elaborate speakeasy.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

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

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."

A terrific purveyor of natural history objects and curios.

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

Historic Hull Street was actually the first street with a proper name in the Boston area.

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

Radical Bookstore and Community Space.

Dim sum, served in a grand old theater.

One of the now-less-hidden floral gems of the "Emerald Necklace."

The Boston square dedicated to the dark poet who was born nearby.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

Two thousand artifacts from around the world collected by one woman who loved to travel.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.