A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

The arch that celebrated the completion of the Lincoln and Victory highways.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

The only surviving prototype of Buckminster Fuller's revolutionary car.

These once-beautiful historic graveyards are set against the barren Virginia City hills.

Experience a charming 1930's version of "infotainment."

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

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A statue high in a hill that represents how Buffalo Bill got his name.

Lone survivor from Custer's Last Stand forever preserved.

The world’s largest combined collection of U.S. and Russian aircraft got its start in a poultry building.

A museum where visitors can learn about greyhounds and (more importantly) pet them.

Cannon designed to fire an atomic warhead.

The first home of the doomed aviatrix Amelia Earhart.

A landscape of massive spherical boulders are the main attraction in this Kansas State Park.

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

A wonderful collection of all things Oz is nestled in the heart of Kansas.

Home to Hollywood history and a very special salt crystal.

Macabre astrological automaton clock dating to the late 1400s.

A tiny basalt mountain with an observation tower overlooking the beautiful Bavarian countryside.

A preserved Nazi labor camp now has a Holocaust museum on site and memorials to the thousands that died while imprisoned at the camp.

Celebrated as a center of civilization, the remains of the ancient city have been nearly destroyed by greed, egoism, and war.

A monument to the two U.S. officers killed by North Korean troops while trying to trim a poplar tree.

The site of many tense prisoner exchanges across the Military Demarcation Line between North and South Korea.