This isolated outpost was once the only place to cross the Colorado River for hundreds of miles.

A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

The wooden airship was the largest flying boat ever built.

A midcentury ranch house hides a literal treasure trove of unique rocks and minerals.

Home of Howard Hughes' Spruce Goose.

A vertically floating hemlock controls the waves and weather at Crater Lake.

Despite a legend that says this highest peak in Oregon was climbed in high heels scores of people have died on its slopes.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

Delightful disarray of found objects and clutter.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Tiny horses tethered to antique rings are scattered around the city.

10,000 flowered plants bloom in the City of Roses.

A Texas cave network is home to some of the world's most spectacular-looking and bizarrely named mineral formations.

This abandoned horse racing track was an exercise in hubris from its inception.

A natural history wunderkammer in the middle of the desert.

A Wild West jailhouse that slid down the mountainside.

The cinder cone volcano with a less than complimentary name.

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

Miniature art that tells an enormous story.

An urban laboratory.

Bat house that has only ever housed bat for one night; they all flew away and never came back.

A monument celebrating the idea of reaching inaccessible places.

A volcanic tunnel illuminated by natural skylights offers a shaded respite from the desert sun.