Ancient pueblos built into the base of a natural canyon wall.

This historic national park is covered in the stunning ruins of red rock pueblos.

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

See massive fossils that are over 200 million years old in northeastern Arizona.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

An overlooked memorial honoring the local Washington residents who died in World War I.

The "lovely red Vega" of the legendary record-settling pilot.

The palatial McDonald's that inspired Wesley Willis.

One of the few remaining relics of the meatpacking hub that made Chicago the "hog butcher to the world."

To find the "unicorns of the deep" you've got to go downstairs.

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

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

This historic hotel invented the chocolate brownie.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.