Archaeologists believe this panel of petroglyphs depicting descending sheep and other figures in Glen Canyon are 3,000 to 6,000 years old.

The damming of the Colorado River buried an iconic geologic formation before record-breaking drought brought it back.

A planet-hunting astrograph built in the 1920s to seek out the so-called "Planet X" beyond Uranus.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

The artist James Turrell is repurposing an extinct volcano crater as an observatory to experience the cosmos.

This historic national park is covered in the stunning ruins of red rock pueblos.

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

A self-built castle made by a mysterious man.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Dramatic river bend surrounds a natural red-rocked pedestal.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Rippling sand dunes frozen in the Arizona rock.

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles

This salad has two key ingredients: hearts of palm and green ice cream.

A lion given to the prime minister somehow got stuffed and sent to Florida.

VW heaven in the backwoods of Dade City, now gone.

Believed to be haunted, this old cemetery is beautifully adorned with Spanish moss hanging from the trees.

The snowbirds here are circus sideshow performers.

Disney World's very first waterpark is now an abandoned ruin being reclaimed by the swamp.

A haunted hill that supposedly defied gravity.

Arrr! The most authentic collection of pirate artifacts in the world... matey.