In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

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

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

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

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

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

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

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

A spiritual vortex among the red rocks in Sedona.

Every year, festive decorations appear on this juniper tree located in the median strip of a busy highway.