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

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

A collection of haunted artifacts chronicles the career of the world's most famous paranormal investigators.

A long-forgotten Victorian swimming hole is still a fun spot for a dip.

A clear blue swimming hole with hidden caves, still unexplored.

An abandoned asylum once on the cutting edge of lobotomies may be reborn as a Christian college.

The remnants of a 19th-century ironmaking complex hidden in the woods of Connecticut.

A famed data visualizer's personal sculpture garden is a landscape of modern and megalithic wonders.

This statue commemorates the importance of hat manufacturing to Danbury, once known as the "Hat City of the World."

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

The lost town of Neversink, sunk by New York City.

This once luxurious Catskills resort is now a haunting ruin.

An abandoned castle owned and ignored by Masons carries a cursed history.

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

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

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

The once abandoned ruins of a Victorian beachside amusement park are now back in working order.

The world's largest indoor go-kart racetrack is hiding in Connecticut.

This factory made "health corsets" that were a step towards liberating women's bodies.

An abandoned 146-acre summer resort slowly being reclaimed by nature.

Forgotten under the construction of a new urban roadway is a small, abandoned part of town.

A reliquary of pop culture marvels, including the world's largest (and most terrifying) Jack-in-the-Box.