A staggering collection of photographs depicting medical, social, and historical change.

A beautiful collection of architectural ornaments rescued from demolished New York City buildings.

Holding the most bodies of any cemetery in the United States.

This neighborhood grocery houses a treasure trove of Eastern European delights.

Cryptic messages embedded in the New York City sidewalk.

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

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

The oldest living tree in Manhattan comes shrouded in sinister legend.

This iconic tattoo shop has its own onsite museum with artifacts from the early history of modern body art.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

Abandoned power station once home to a squatter community, now being developed into an arts center.

A dark, dank room in subterranean Manhattan was the site of a ghastly murder.

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

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

Ride the subways of yesteryear.

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

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

A terrific purveyor of natural history objects and curios.

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

A crumbling hospital from the 1850s on Roosevelt Island.

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.

The Grand Lodge of Ireland is one of the oldest in the world, full of fantastical, elaborately themed rooms.