An experimental, automotive replica of Stonehenge.

Walk up a ramp through a forest for panoramic views of Lake Michigan.

One of the largest aviation events in the world brings half a million aircraft enthusiasts to Wisconsin each year.

The evolution of recreational vehicles and motorhomes is on display in the “RV capital of the world."

The Grand Canyon of Texas.

The second largest roadrunner in the world stands 11 feet tall in his West Texas town.

High in the Sacramento Mountains, a facility dedicated to studying the sun.

This 1950s-era nostalgic roadside New Mexico attraction consists of a quirky curio store and museum embedded into the face of a cave.

A museum dedicated to the alleged Roswell Incident.

Hidden in the New Mexico desert southeast of Roswell, nine small deep lakes formed inside sinkholes.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

One of only two exposed meteor impact craters in the United States

A collection of massive stacked rocks in Texas includes a snarky note on the benefits of modern technology.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

This constitutionally sound Muffler Man harkens back to the days these attractions were a must-see.

A small car graveyard sits in the shadow of the famous Cadillac Ranch.

Whether or not you take the 72-ounce steak challenge, there’s plenty of history, fun and Texas-style food at this legendary stop along Route 66.