Named the fifth most beautiful building in America in 1885, this former courthouse boasts the best view in the Village.

The oldest bibliophilia club in America, with exhibitions on historic books and graphic arts.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

The beautiful tunnel that ran from the lobby to Penn Station is still hidden underneath 34th Street.

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

The loneliest island in New York.

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

Nondescript elevator doors open to reveal a stunning, surreal world.

This former Norwegian sailor's church is slowly being taken over by ramshackle robot musicians.

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.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

A celebration of capitalism in Midtown.

Ride the subways of yesteryear.

A tunnel once abandoned now thrives with graffiti art as an off-limits makeshift gallery.

More gold than anywhere else, ever.

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.

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

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

What was meant to be a temporary exhibit is now a permanent fixture at the St. Louis Zoo filled with beautiful birds.

A subterranean haunt where wine and homemade biscottis are always on the menu.