This former mining town was named the most toxic town in America.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

The only known Futuro house in North Carolina sits along a stretch of desolate highway on the Outer Banks.  .

Toxic waste disaster that founded the Superfund program.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

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

Elevated freight railway turned wildly successful urban park.

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

World War II bunker still standing on the New Jersey beach.

Step inside Lucy, the world's largest "elephant."

Mining caused an asbestos emergency in this small town.

It's big, it's a ball, and it's made of twine—the world's largest of its kind.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

Home to the deepest rift anywhere on Earth.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

Erroneously called the world's tallest flagpole, this landmark is devoted to "good neighborliness."

This simple highway curve has become a comedic pilgrimage site.

The so-called "Bridge of Thighs" in Palm Springs allows nudists to discreetly cross the road.

Huge otherworldly domed rocks on the shore of a deadly lake.

Decommissioned experimental solar facilities that pioneered solar energy technology.

Semi-recognized center of the world, with many oddities.

World's largest collection devoted to one fruit.

Version of the French Riviera destroyed by the sea.

The "Fun Spot of the Desert" is now a haunting ruin, and a reminder that putting a water park in a desert is a bad idea.