A relic of the Cold War in Chicago.

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

A stone marker memorializes the spot where the King broke up a street fight with a classic karate stance.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

During the 19th-century, this park was a vital trading fort.

A fascinating collection of art made from petrified wood and fossils by two octogenarian twin brothers.

These experimental weapons brought World War II to Nebraska as well as 26 other U.S. states.

An idle pastime becomes a record holder in Boys Town, Nebraska.

An Iowa town celebrates its heritage with the tallest working Dutch windmill in North America.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

Less a museum than a bizarre fantasy world created by artists and engineers.

The famous greeting card maker owns a collection of paintings by the famed surrealist.

The world's second largest rocking chair is found on Route 66 in Cuba... Missouri.

The first home of the doomed aviatrix Amelia Earhart.

The face of the famed flier in a hillside in her hometown.

One of the Eight Wonders of Kansas and the first official National Natural Monument these stark formations look like nature's Stonehenge.

A whimsical monument marks the highest point in Kansas, not that you could tell by the looks of it.

The remains of a World War II-era Japanese American internment camp dot a windswept Colorado hill.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

This three-mile concrete levee in Pueblo, Colorado was transformed into the world’s longest painting.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

An ancient stone fortress considered by many to be the eighth wonder of the world.