After getting its start in the 1940's, the Mesa Historical Museum was incorporated in 1966 by citizens concerned about the preservation of Mesa's rich history. The museum's original home was at the old City Hall building in downtown Mesa. This is now the location for the Arizona Museum of Natural History. As the names make clear, the Arizona Museum of Natural History focuses on the natural history of the region (including archaeology and paleontology), while the Mesa Historical Museum is dedicated to the exploring and preserving regional heritage.