Yuma Proving Grounds Open Air Museum in Fortuna Foothills, Arizona

Just off Highway 95 between Quartzsite and Yuma, a pair of large Howitzer cannons pointed skyward to mark the turn off the highway onto East Imperial Dam road.

The open-air tank and cannon display is about three-quarters of a mile down. Ample parking and bathrooms are available near the displays. The Yuma Proving Grounds main entries are down a bit further with another tank and Apache helicopter on display near the restricted entry.