During its heyday, 72 one-ton buckets from this dredge bore into the Powder River excavating vast gold deposits.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

The original span of a high bridge across the deep Crooked River Gorge has been preserved for pedestrian use.

Spectacular volcanic cliffs along the Crooked River invite hiking, rock climbing, and photography.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Each winter this underground cave forms a dazzling ice palace.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

The flow from this waterfall sometimes comes out of springs below its rim.

This beloved roadside attraction welcomes visitors with his signature neon smile.

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

An iconic 1960s theater with a Buckminster Fuller-style geodesic dome.

This 18-foot-tall steel lotus is a meditation on ecological crisis that originally appeared at Burning Man.

The colossal cartoon man stands outside a Nevada museum.

Curiously, this large sporting goods store features 14 wax representations of American presidents.

A fine mixture of the old and the new topped with an art deco neon spire.

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

Art Deco stylings conceal the true nature of this bridge.

This 15-story mural celebrates the 50th anniversary of the musician's iconic "At Folsom Prison" album.

The only standing town in the United States that early Chinese Americans built for themselves.

A blast from the past in central San Diego.

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

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

A hidden courtyard houses early 20th-century plaster masterpieces.