The most unloved grain elevator in Brooklyn was a “Magnificent Mistake.”

Once America's longest-manned military fort, now an abandoned hulk.

I fought the law and the precinct caved in.

The sign at the garden gate reads: "These Plants Can Kill."

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

This innocent-looking townhome is actually a subway exit.

A Belgian self-built tower inspired by the Bible and ancient civilizations.

World's first "penitentiary," meant to be humane, drove men insane.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

Ride the subways of yesteryear.

Science fiction's grandfather has a fittingly marvelous tomb.

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

Haven for steampunks.

Mutant vegetables, transgenic mosquitos, and atomic rodents span the walls of this one-of-a-kind museum.

An ice cream parlor chain that caters to vegans and pinball fans equally.

The headquarters of the famous Yale society.

The world's smallest commercial theater is set up in what was once a urinal for Victorian men.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

A museum collection honoring the long history of the FDNY is held in a disused Manhattan fire house.

The remains of this early 20th century refinery loom on a mountainside like a graffiti-covered fortress.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.