Six Flags Fiesta Texas is a theme park located on approximately 200 acres (0.81 km2) of land in San Antonio, Texas, USA. It is owned by Six Flags.Six Flags Fiesta Texas is the major entertainment component of USAA's La Cantera, a 1,600 acre (6.5 km²) master-planned development in northwest San Antonio. "La Cantera" means "rock quarry" in Spanish and refers to the former use of the property on which the development sits.