A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

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

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

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

Sniff the Titan Arum's rotting flesh.

The "Seinfeld" diner.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Ride the subways of yesteryear.

Read a book next to a Midtown waterfall.

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

A dilapidated dock tells the story of Titanic's missed arrival.

A hip bar decorated with walls of golden skulls.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

Try not to get slimed in Tribeca.

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

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."

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.

A terrific purveyor of natural history objects and curios.

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

These legendary stone steps were once used to haul coffins up the rockface.