The Tucson Botanical Gardens spans 5.5 acres and features 20 unique gardens right in the center of Tucson, Arizona, USA. Tucson Botanical Gardens (TBG) is nestled on the historic Porter property, spanning five and a half acres filled with over 20 unique gardens right in the center of Tucson, Arizona. This beautiful urban oasis was honored as the #4 botanical garden in USA Today’s 10Best Readers’ Choice Awards for both 2023 and 2024.