A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

The world's largest otter started his life as a high school shop project.

America's only nuclear missile silo open to the public.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

This collection of vintage signs reflects the long and colorful history of this Arizona town.

A $100,000 tumbleweed decorates an Arizona park and ride that got its priorities a bit tangled.

This family-owned restaurant celebrates Native American cuisine.

With over 340,000 artifacts and counting, there is something for everyone, often called the "Smithsonian of the West."

This giant meditative chakra sits peacefully in the Flathead Valley of western Montana.

This landmark church at the Flathead Reservation mission features 58 ceiling and wall frescoes painted by the mission's cook.

A mining town, now abandoned, was built in a canyon so narrow that the railroad ran right through the hotel lobby.

Between Missoula and Spokane, a family-owned travel center has an unusual museum in the back.

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

The headquarters of the prestigious World Food Prize celebrates the heroes in the fight against hunger, has no cafeteria.

A castle built by an eccentric medieval enthusiast in suburban Ohio.

This burger joint is named after everyone's favorite carnival prize and is adorned with a giant one over the door.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

The oldest house in Galena, Illinois, now is a reminder of when this city was the world's lead mining capital.

More than 5,000 contemporary and "historic" mustards from around the world.

This large midwestern cavern features impressive rock formations and an underground waterfall.

This long unused shot tower on the Mississippi remains a point of pride for a small city in Iowa.

For just a few bucks, this Iowa funicular will let you feel like an 1800s fat cat.

The farm toy capital of the world hosts a museum filled with toy tractors dating back to the late 1800s.

Ever wanted to can Spam?