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

An artist's cute bronze subway sculptures belie his violent artistic past.

The only gallery in New York dedicated to olfactory art and the exploration of scent in art.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

This was one of the first (and last) university-built and operated nuclear reactors.

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

This semi-hidden Manhattan restaurant is based out of a loading dock.

The iconic Manhattan corner that was once the site of the Beastie Boys' fake clothing store.

Become a prohibition rebel.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

Underneath the bustling city streets, a hydroponic farm grows unique herbs in an urban oasis.

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

A celebration of capitalism in Midtown.

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

A 63-foot-tall swinging ball hypnotizes passersby, and proves to any remaining doubters that the Earth is spinning.

A 300-foot-long Cold War submarine floats in a Chilean River as a maritime museum.

The walls are decorated with whimsical murals painted by the creator of the Madeline franchise.

A plaque at the lighthouse where Frederick Valentich made his last radio contact before he vanished without a trace.

The Boston square dedicated to the dark poet who was born nearby.

Tiny historical streetcars wind through a small scale version of Crescent City in this whimsical train garden.

Every year model trains zip through a miniature New York City that's now 150 landmarks strong.

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

These historic buildings once housed the headquarters of one of the most infamous gangs of New York.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.