These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

Over 50 historic windmills whir away at this outdoor museum.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

See six states, pickled freaks, rocks, and antiques.

A house turned museum is the real-life "home" of the fictional main character of The Wizard of Oz.

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

The United States's largest hand-dug well is topped with a state-of-the-art museum.

Metal sculpture folk art lining the Kansas Highway.

No matter what the plaque under this massive legume says, this is not the world's largest peanut.

American bison herd descending directly from a Bronx Zoo breeding program that saved the species from extinction.

Final resting place of Geronimo, Quanah Parker, and the first atomic gun ever fired.

The world's only museum devoted solely to the art and collection of action figures.

A Texas-sized particle collider that was abandoned due to its Texas-sized budget.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

A warm desert spring holds one of the rarest species on earth.

Pompeii's less famous neighbor is still revealing her secrets.

Geometry and mystery come together in an epic show of octagonal masonry.

Virgil's many-mouthed gateway to the underworld.

A submerged archeological park still holds the wonders of a Roman Sodom.

A sulfuric hellscape in southern Italy.

Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

A volcanic old faithful, Stromboli has been erupting continuously for the last 2000 years.

An Italian hillside ghost town.

The Emperor Tiberius' palace of debauchery.