Catch a glimpse of the elusive Peninsular bighorns right off of the desert freeway.

This dark, quiet forest on the outskirts of San Diego is dense with rumor and lore.

The Giant Lemon of Lemon Grove.

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

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

The unusual patterns in this rock formation result from two distinct modes of weathering.

A tunnel with windows, so you don't miss out on the impressive views.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.

The world’s largest concentrated solar plant generates as many problems as megawatts.

Experience a charming 1930's version of "infotainment."

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

An exotic wildlife habitat right off The Strip.

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

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

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

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

An artificial crater field that trained astronauts for lunar exploration.

Ancient pueblos built into the base of a natural canyon wall.

A spiritual vortex among the red rocks in Sedona.

A Wild West jailhouse that slid down the mountainside.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

Arizona's first government hub is a rustic cabin now preserved as part of a historical museum.

This underground cave located in the most barren reaches of Idaho is filled with ice year-round.