Conflicting markers on its floor tell a tale of two city centers in San Antonio.

This little slice of old Jerusalem in Oklahoma is the evolution of a 90 year old passion play.

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

Once the smallest park in the national system.

Legend says this sacred tree was a gift from goddess Athena.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

This striking sculpture of Icarus honors Greece's fallen flyers.

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

One of the best examples of Art Deco architecture in the United States.

A half-size replica of the World Trade Center towers above Tulsa.

An acoustic anomaly with a mysterious cause.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

An exotic wildlife habitat right off The Strip.

Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

The most magnificent bottle house in a town strangely full of them.

Odd outsider art installations surround a Gold Rush-era ghost town.

"Only the devil could play golf here."

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

The precious-metals strikes dating back to the 1860s are now mostly inactive, but this area has become the United States' only domestic source of lithium.

This massive solar generating facility in the Nevada desert has been plagued by difficulties.

Oh, just a motel on the edge of the desert decorated with thousands of clowns conveniently located next to an abandoned graveyard.