At this hidden studio, the dying art of taxidermy is alive and well.

The home of aviation trailblazers, in a remote corner of the big city.

A museum collection honoring the long history of the FDNY is held in a disused Manhattan fire house.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

An oasis of calm amid the chaos of the boardwalk, the museum traces the heritage of this beloved beachside amusement park.

Hear the tales of New York's most notorious criminals.

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

Avoid gangster interaction while window-shopping.

The last slot car racing arcade in Brooklyn is keeping the dream of speedy little autos alive.

Unique antiquarian shop specializing in globes, maps, and prints.

More gold than anywhere else, ever.

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

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

A semi-scholarly approach to sex.

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

A crumbling hospital from the 1850s on Roosevelt Island.

A terrific purveyor of natural history objects and curios.

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

Nestled on the banks of a river in Nuremberg is a small museum that was once home of the city's official executioner.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

An abandoned train station in Munich constructed for the 1972 Olympic games.