Rancho El Sur was a 8,949.06-acre (36.22 km2) Mexican land grant in present-day Monterey County, California, on the Big Sur coast given in 1834 by Governor José Figueroa to Juan Bautista Alvarado. The grant extended from the mouth of Little Sur River inland about 2.5 miles (4.0 km) over the coastal mountains and south along the coast past the mouth of the Big Sur River to Cooper's Point. In about 1892, the rancho land plus an additional 3,000 acres (1,200 ha) of resale homestead land was divided into two major parcels. The southern 4,800 acres (1,900 ha) became the Molera Ranch, later the foundation of Andrew Molera State Park. The northern 7,100 acres (2,900 ha) form the present-day El Sur Ranch.

Big Sur is a rugged and mountainous section of the Central Coast of the U.S. state of California, between Carmel Highlands and San Simeon, where the Santa Lucia Mountains rise abruptly from the Pacific Ocean. It is frequently praised for its dramatic scenery. Big Sur has been called the "longest and most scenic stretch of undeveloped coastline in the contiguous United States", a sublime "national treasure that demands extraordinary procedures to protect it from development", and "one of the most beautiful coastlines anywhere in the world, an isolated stretch of road, mythic in reputation". The views, redwood forests, hiking, beaches, and other recreational opportunities have made Big Sur a popular destination for visitors from across the world. With 4.5 to 7 million visitors annually, it is among the top tourist destinations in the United States, comparable to Yosemite National Park, but with considerably fewer services, and less parking, roads, and related infrastructure.