Tucson AZ, which is also sometimes called the Old Pueblo, Tucson was founded in 1775, and is a fascinating combination of Native American, Mexican, Spanish, and Old West history. Now a busy metropolis with a population of almost one-half million souls, it was once a rough-and-ready township under Spanish Colonial government.Tucson is big on the performing arts too. Almost any time of the year, youll find presentations by the Arizona Theatre Company, the Arizona Opera, the Arizona Ballet or the Tucson Symphony Orchestra