Arizona: Tohono O’odham’s $400M Casino Takes Shape in Glendale Chuck Harvey, Construction Equipment Guide · August 13, 2019 at 9:21 pm A new casino is rising from the desert in Glendale, Ariz. The new $400M Desert Diamond West Valley casino is more than twice the size of the original one built at the site, which also includes a resort. Tohono O’odham tribe’s gaming enterprise oversees the project. The addition of the resort combined with the popularity of the casino, necessitates an increase in the casino interior. The casino will cover 75,000 sq. ft., compared with the current facility’s 35,000 sq. ft. Desert Diamond Casinos & Entertainment, with three locations in Southern Arizona (Tucson, Sahuarita and Why) and one in the West Valley, is owned and operated by the Tohono O’odham Gaming Enterprise, an enterprise of the Tohono O’odham Nation.