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

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

An abandoned Jazz Age dream home and con man's hideout in Death Valley.

This massive redwood tree has a hole in the base big enough to drive through.

Once close to extinction, there is no shortage of elephant seals on the beaches of Año Nuevo State Park.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

The fastest transatlantic ocean liner sat abandoned in a Philadelphia shipyard for decades.

An Irish Memorial commemorating those who perished due to potato blight.

Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

In which a local geological marvel becomes a quaint roadside attraction.

A toxic ghost town sitting atop a massive coal fire.

The first American department store, and home to the largest operating musical instrument in the world.

The world’s first penitentiary, meant to be humane, drove men insane.

A rare view of a preserved Victorian science museum.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

One artist's love letter to his city and its citizens plays out across dozens of bright murals painted on the sides of decrepit buildings.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.