A forgotten relic from New York's bygone trolley system hides in plain sight under a bridge.

There's a piece of New York City transportation history hidden in plain sight at a Manhattan subway stop.

One of the few remaining American elm trees in New York’s Tompkins Square Park was the birthplace of a new religion.

The "Seinfeld" diner.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A DIY art gallery/music venue/lecture hall dedicated to video game culture.

A hands-on traveling collection of the innovative devices of yesteryear.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

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

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

A New York garbage depot holds a secret collection of weird and wonderful refuse.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

New York's oldest magic store.

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

A terrific purveyor of natural history objects and curios.