This historic theater's pipe organ still accompanies silent films just like it did in 1929.

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

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles

A once grand hotel is being retaken by the wilderness it once capitalized on.

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

A natural gas leak provides a flickering flame beneath a waterfall.

Sniff the Titan Arum's rotting flesh.

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

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

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

Ride the subways of yesteryear.

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

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

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

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

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

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

Walk into the 19th century without leaving Brooklyn.

Hidden in one of New York's oldest subway stations is the final remnant of the site of the bizarre Shakespeare Riots.

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

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

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

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.