In the middle of downtown Brooklyn lies a 165 year old secret hidden right below the surface (closed to the public indefinitely).

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.

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.

Ride the subways of yesteryear.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

An unconventional space for art and science housed in a massive old warehouse.

Erotic art covers the walls of the largest ancient pleasure palace.

An urban laboratory.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

A big shiny gin and whiskey distillery in Sunset Park.

The gilded vestiges of a sterling department store can still be found in a Brooklyn shopping center.

Detailed facade of a brownstone in Boerum Hill.

A decommissioned military complex that's now a modern industrial park.

A huge resale shop for the cast-offs of the film & television industry.

A crumbling hospital from the 1850s on Roosevelt Island.

A modern zoetrope on the New York City subway.

An 1883 schoolhouse now home to collective of artists.

Sniff the Titan Arum's rotting flesh.

This city park was once a lookout point for George Washington’s army during the Battle of Brooklyn in 1776.

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

Self-sufficient greenhouse floating on the Hudson River.

A castle built by an eccentric medieval enthusiast in suburban Ohio.