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

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

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

A $100,000 tumbleweed decorates an Arizona park and ride that got its priorities a bit tangled.

A self-built castle made by a mysterious man.

The historic “pink house on the hill” is an architectural gem that now serves as a center for water conservation.

The unusual burial monument of Arizona's first governor.

A museum and tribute to a brave profession.

This giant temperature attraction created some giant electric bills.

A mining town once rife with murderous disputes over its copious treasures now creates income as a popular spot for photo shoots.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

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

A giant open-air sculpture made of over 200 full-sized boats.

These banned cigarette vending machines now sell little pieces of pocket-sized art.

Largest man-made excavation on earth!

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

An artificial crater field that trained astronauts for lunar exploration.

A mysterious "wedding cake" castle in the middle of the urban desert.

Around half a million years ago, these magnificent columnar basalt cliffs were formed from cooling lava.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A monument to Cuffy, a rebellious enslaved person who became a national hero in Guyana.

A creek tumbles over a series of step-like rocks to create this scenic water feature.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A small flooded ghost town with a few scattered structures remaining.