Best for Christmas Shopping Because: Mercado San Agustin is Tucson's only public marketplace, featuring a selection of locally made artisanal goods. Recommended as Best Shopping Because: The Mercado San Agustin is a must-shop destination when you're looking for a one-of-a-kind, Tucson-made goods. Best for Shopping Malls and Centers Because: The American Antique Mall has one of the largest selections of gently used and consignment goods in Tucson.