Los Rios Rancho a 103-year-old ranch; Southern California's largest historical apple ranch, located in the heart of apple country, draws more than 300,000 visitors yearly make the scenic drive to Oak Glen to pick apples, picnic and hike as well as enjoy the homemade apple pies and freshly pressed cider. Joseph E. Wilshire, who helped make the Oak Glen area famous for apple growing in the early 1900s had realized early on the suitability of The Glen for growing bountiful apples and began buying land where with his brothers George, Henry and Edward began the Wilshire legacy.