See massive fossils that are over 200 million years old in northeastern Arizona.

One of the most extensive and well-preserved collections of dinosaur footprints in North America.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

This former shopping outlet is now adorned with beautiful graffiti and murals.

Named after an outlaw who used the basin as a hideout.

Harder layers in colorful sandstone weather out as prominent “fins" and even more intricate and bizarre shapes.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

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

This golf ball–shaped former desert real estate office now houses a UFO museum.

Where NASA's satellites and rovers phone home.

The largest dune field in the Mojave offers a chance of hearing the 'singing sands.'

One of the most unusual geological features, recognizable from a dozen hit movies.

In one of the hottest parts of the Mojave Desert, shallow bedrock forces the typically dry Mojave River to the surface in this canyon, providing a vital oasis for humans and wildlife.

Colorful sedimentary rock layers provide opportunities both for hiking and photography.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.