A tribute to the life and work of the beloved "Peanuts" cartoonist.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

One of the most remote spots in America and the first protected wilderness area in Nevada, named after an old legend.

The fifth-longest natural arch in the world, and the longest outside China.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

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

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

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

A clear blue swimming hole with hidden caves, still unexplored.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Community owned and operated, this property is home to a diverse set of nudists.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

When ecosystems collide in the arid Southwest.

The highest bridge in America was built for an almost unnervingly small amount of money.

This naturally-sourced hot spring is now home to a clothing-optional resort.

One of the Eight Wonders of Kansas and the first official National Natural Monument these stark formations look like nature's Stonehenge.

The house's confection-like decorations are the result of one man's painstaking work over decades.

The Grand Canyon of Texas.

An emerald-green grotto just a short trip from Austin.