The Casa Grande (Great House) Ruins are south and west of Phoenix. These ruins were built on the valley floor, the 'great house' is 4 stories high and 60 feet long! It was the center of a large walled compound and was occupied during 1100 to 1400. Its walls face the four cardinal points of the compass. A circular hole in the upper west wall aligns with the setting sun at the summer solstice. Other openings align with the sun and moon at specific times. In the lower photo you will notice a steel and concrete canopy that was erected in 1932 to protect the Casa Grande.
The Tonto National Monument Cliff dwellings are east of Phoenix. We actually hiked to one of the cliff dwellings and wondered through the ruins. The hike was amazing and so were the ruins. Click on the photos to enlarge (especially the one with the view from the ruins - you can see the parking lot - where we started our hike - at the bottom of the photo)