A colorful, century-old cemetery of the Yaqui Indian Tribe hidden amid the suburban sprawl of Tempe, Arizona.

Four tons of weapons merge together in a memorial against violence.

A Norman-style castle, 1850s Irish cottage, and cultural center in the heart of Phoenix.

The first permanent memorial to a unique secret weapon of World War II.

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

This mural of the late David Bowie features eight colorful panels showcasing Bowie’s various alter egos.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

The handsome statue is a tribute to the post riders who traversed 52 miles of tough Arizona terrain.

This oversized flute-playing Ancestral Puebloan deity is also a landmark of Southwestern kitsch.

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

The final resting place of the businessman-turned-astronomer who helped discover Pluto stands near his observatory.

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.

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

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

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

A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

This 1930s log cabin began as a taxidermy museum but is now a popular country music venue.

A replica of the flagpole that gave a frontier town its name.

Crafted in 1911, this steam locomotive spent its entire working life in Flagstaff.

The cinder cone volcano with a less than complimentary name.

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