Tesoro Adobe Park: A Historic Landmark in California Introduction Tesoro Adobe Park is a significant historic landmark located in California. This beautiful park holds great historical and cultural significance. In this article, we will explore the history of Tesoro Adobe Park, its attractions, and how it has become a popular destination for visitors from all over the world. History of Tesoro Adobe Park Tesoro Adobe Park is situated in the city of Rancho Santa Margarita, Orange County, California.