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

A dark, dank room in subterranean Manhattan was the site of a ghastly murder.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

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

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

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

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

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

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

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

An unassuming secret door once led to a legendary watering hole.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

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

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

A celebration of capitalism in Midtown.

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

A DIY art gallery/music venue/lecture hall dedicated to video game culture.

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

This little museum is built on a theater that was once a wildly elaborate speakeasy.

A dilapidated dock tells the story of Titanic's missed arrival.

Discover the magic in the mundane in Iceland's Museum of Everyday Life.

This stunning concert hall has become a symbol of Iceland's national recovery.

Ain't no party like a ghost town party.

One of the world's tallest waterfalls wasn't revealed to the world at large until 2006.