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

A semi-scholarly approach to sex.

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

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

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

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 terrific purveyor of natural history objects and curios.

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

Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

This meticulously extracted nervous system allegedly came from a 19th-century custodian who donated her body to science.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

World's first "penitentiary," meant to be humane, drove men insane.

This institution collects the history of burlesque dancing with a titillating collection of ephemera and pasties.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

9,000 years of carnal history is on display at China's original Museum of Sex.

These machines have been collecting dust for decades.

Hundreds of handmade critters fill this tiny window gallery in the heart of Portland's Alberta Arts District.

Inside a humble hangar is some of the best roller derby the world has to offer.

Is this the most Portland place ever?

Not-so-fearsome tiny trolls live under this wooden train trestle in Portland.

This film studio and amusement park is considered one of the greatest filming locations in China.

The Chinese have long been excellent at the art of copying, but this epic replica takes the biscuit.