The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

Failed state-supported institution meant to rehabilitate students with intellectual disabilities.

A Natural History and Science Emporium.

A semi-scholarly approach to sex.

Tucked in the back of this amazing antique store is an important piece of medical history.

A crumbling hospital from the 1850s on Roosevelt Island.

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

Join in a Seance at the Swedenborgian Church.

A celebration of capitalism in Midtown.

Prove you deserve to be fed by Kenny Shopsin.

A massive forgotten storehouse from 1913 on the Brooklyn Waterfront has a spectacular view of Brooklyn.

A living archive of urban activism and space reclaimed.

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

The oldest surviving synagogue in New York City is now a soaring art space.

A terrific purveyor of natural history objects and curios.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.