This secluded ruin was once a home for exotic plants.

Deep under Manhattan is the largest construction project in city history. So far, the project has taken the lives of 23 workers, or "a man a mile."

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

Bowl in splendor, if you're lucky.

The first and only carousel with a lineup entirely of insects.

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

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

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

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

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

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Sniff the Titan Arum's rotting flesh.

Ride the subways of yesteryear.

Mysterious 500-year-old tapestries depict a unicorn hunt.

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

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

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.

New York's oldest magic store.

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

Hidden on two floors of downtown building, the library has an incredible deal on rent.

Indiana's oldest sternwheel paddleboat has been plying the placid waters of Webster Lake for 90 years.

Low-frequency noise compared to an idling train can only be heard by some of this industrial town's residents.

A collection of over 2000 air-moving devices of all kinds displayed in the Fanimation headquarters.