Filoli is a country house set in 16 acres (6.5 ha; 0.025 sq mi) of formal gardens surrounded by a 654-acre (265 ha; 1.022 sq mi) estate, located in Woodside, California, about 25 miles (40 km) south of San Francisco, at the southern end of Crystal Springs Lake, on the eastern slope of the Santa Cruz Mountains. Now owned by the National Trust for Historic Preservation, Filoli is open to the public.