Heritage Hill Historical Park is composed of 4.1 acres, four historic buildings and associated structures for maintenance and public restrooms. The fully restored and furnished historic buildings span the early history of the Saddleback Valley and El Toro area from the Mexican Rancho era (Serrano Adobe, circa 1863), to the founding of the town of El Toro (El Toro Grammar School, 1890; St. George's Episcopal Mission, 1891), through the citrus farming days of the early twentieth century (Harvey Bennett Ranch House, 1908).