The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Legends surround this jagged rock formation in the New Mexico desert.

The location where the iconic movie character declared it was time to go home.

Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.

Creek water that starts here has a 50/50 chance of ending up in the Atlantic or the Pacific.

This rustic old building is said to be the most photographed barn in America.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

A striking sculpture built to honor the women of the Lakota and Dakota Nations.

Dedicated to the history of the 1,000 nuclear missiles that once covered the Great Plains.

One of the first intercontinental ballistic missile sites in the United States.

Calidum et Deliciose Succosum!

This off-the-beaten-path abandoned town is a relic of Montana's silver mining boom.

The first declared National Monument in the United States.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

One-time winter retreats of prolific inventor Thomas Edison and his friend Henry Ford.

Yes, this monument is aware that it is about 20 miles away from the actual center of the United States.

Known as "The Hill of the Little Devils."

One of the world's most definitive collections of musical instruments, spanning all cultures and historical periods.

A fitting attraction for the corn capital of the world.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.