Route 66 in Flagstaff

The first of the iconic American roadside attractions lives on as a college mascot.

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

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

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

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