Best Day Trip Into Arizona's Prehistory Phoenix 2000 - Casa Grande National Monument, Coolidge
Built around 1350, the four-story Big House sits at the center of a small Hohokam farming community that was part of a much larger network of Hohokam villages. The building may have been part observatory, part trade center, part food-storage bin -- archaeologists are still trying to understand its full significance to the community.
According to the comprehensive information center, the Big House was just a small part of a sophisticated culture that used an expansive canal system to prosper in a hostile environment. Sound familiar? They built the original Phoenix that then rose from the ashes.