Cactus and chocolate? Surprisingly, they work well together. Take a self-guided free tour of the chocolate factory and the 2.5 acres of surrounding grounds with over 350 species of cactus, succulents and desert plants from the Southwest and other deserts of the world. Visitors can also view the Living Machine™ as part of the self-guided Cactus Garden tour. The Living Machine™ is an acre of waste-consuming ecologies in tanks, marshes and reed beds transforming wastewater into water clean enough to be used for landscape irrigation.