You may drive by the Pueblo Grande Museum every day without even knowing it. Nestled between the airport and freeway, this archaeological museum showcases some of the early finds of the Hohokam people and their massive canal system.
Similar to other ruins, the walls and layout are typical of the Valley natives. Many of the features are similar to Casa Grande without the long drive. There are several recreated "suburban" houses and other structures. The museum is also much nicer.
Pueblo Grande is popular with school groups and locals, but it should be a part of everyone's list with a good overview of the Hohokam people and their history in the region.