One of the oldest producers of hand-folded fortune cookies still uses its original secret recipe.

This residential door allows San Francisco muggles a glimpse at the wizarding world.

San Francisco's newly reopened hands-on science museum.

Olfactory delights in San Francisco's Botanical Gardens.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

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

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

Unrepaired walls from a 1920 anarchist bomb attack.

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

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

Lie in a hammock where George Washington stood.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

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

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Nikola Tesla's former home contains an homage hidden from plain sight.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

A very classy 1920s-era bar right in Grand Central Station.

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

Try not to get slimed in Tribeca.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

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.