The world's largest version of this iconic puzzle cube is located in Knoxville, Tennessee.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

While knives are the main feature in this store, visitors will also find dinosaur bones and meteorites.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

A bizarre roadside attraction and the first instance of miniature golf in the world.

This papier-mâché diorama celebrates an unusual landmark: the brightly-colored runoff from a local sock factory.

The collection of a paranormal investigator who traveled the country collecting haunted items and stories.

Moonbows over Kentucky.

Five restored historic road bridges in a park along the Kalamazoo River.

The unusual medical inventions of the man who gave the world Corn Flakes.

When beetles destroyed these trees, they found new life as fantasy sculptures.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

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

This resort community was known as the "Black Eden of Michigan."

Unique Michigan homes look like something out of Tolkien's "The Lord of the Rings."

With over 5,000 champions, the Hall of Fame continues to draw amateur eaters.

Dating back to the 1800s, two imposing buildings in Michigan have had countless transformations over the years.

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

Toxic waste disaster that founded the Superfund program.

One of the oldest living oak trees in the Southeast.

Thirteen pastel palaces in downtown Charleston add a gorgeous splash of color to the city.

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

A graveyard of bathyspheres and diving bells paints a weirdly accurate account of ocean exploration's rickety history.