Strange red rock formations that have been attributed to a higher power for hundreds of years.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

The world's longest known cave system.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

The first declared National Monument in the United States.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

America's most famous piece of self-built architecture.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

The palatial McDonald's that inspired Wesley Willis.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

First planned industrial community in the United States.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

A science teacher's dream.

The author's beautiful and historic home is also a fully functioning goat farm.

This limestone outcropping was once a ceremonial site for ancient Native Americans.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

The site of the Scopes Trial contains a small exhibit dedicated to the famous case.

The pan man stands as a testament to the functionality of American cast iron cookware.

More than five miles of underground passageways.

This museum dedicated to an oft-overlooked support industry features a surprisingly moving brass diorama of a man being saved from a sinking car.

This historic train station has been converted to a locomotive themed hotel.