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

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

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

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

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

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.

Ride the subways of yesteryear.

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

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

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

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

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

A semi-scholarly approach to sex.

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

A terrific purveyor of natural history objects and curios.

A crumbling hospital from the 1850s on Roosevelt Island.

These whimsical works of art tell the story of the city's past and present.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

The history of the tea trade is told in bas-relief on this historic pair of Boston doors.