In West Virginia, you can walk across the longest single-arch bridge in the Western Hemisphere.

This functioning mill was built in the 1970s using parts from several other West Virginia mills.

Near-constant high winds deform the trees on Spruce Knob, the highest point in West Virginia.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

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

Marta Becket's hand-painted theater in the desert.

This enormous fiberglass cow near Death Valley National Park once graced a casino roof in Las Vegas.

A cosmic pit stop just beyond the notorious Area 51.

Water of undetermined depth has attracted rare fish and cult leaders alike.

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

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

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

This Las Vegas casino boasts one of only three spiral escalators in the United States—an engineering wonder.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

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

Las Vegas's very own 40-foot-tall fire-spewing praying mantis.

An exotic wildlife habitat right off The Strip.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

Flashy signs from Las Vegas’s past find their final resting place at this unusual graveyard.

These markers are used to document elevation changes around the famed dam.

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

Experience a charming 1930s version of "infotainment."

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.