The Yuma Art Center is a beautiful gallery and venue. Downtown Yuma is surprisingly lovely. It's clean, safe and filled with gorgeous art-deco architecture. The gallery has soaring ceilings and other than displaying work from local artists, it would be a fantastic event space, and has even hosted a few weddings.
There were great pieces, some as low as $150, and in a variety of mediums. Some of the collection was Yuma-centric. Great place to stop in if you're strolling downtown.