America's first serial killer rests in anonymity.

Frank Lloyd Wright built this suburban synagogue late in life, but it stands among his most iconic masterpieces.

The cinder cone volcano with a less than complimentary name.

This historic national park is covered in the stunning ruins of red rock pueblos.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

Underground tunnels remain beneath this abandoned mental asylum.

The land is home to swimming ponies and a legendary 18th-century treasure.

Hundreds of numbered stakes hidden in the woods mark the graves of the lost souls of a nearby asylum.

The home of aviation trailblazers, in a remote corner of the big city.

The 28-foot granite map plots the locations of 40 theaters in New York City.

A winding, cliffside stretch of road overlooking the Delaware River.

There must be a pun in this haystack somewhere...

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

This former theme park in New York's Adirondack Mountains fell into ruin before being resurrected as a state-run campground

Beneath the mossy overgrowth covering this once-sprawling campus lies decades of history and the secrets that come with it.

A bit of retro transportation flair preserved in the world's largest department store.

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

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

A playground inspired by differential calculus dangles from the ceiling of the Liberty Science Center.

The rusting remains are visible sticking out of the waters of the Delaware Bay.

A recently abandoned psych ward at the end of Sanatorium Road.