The Arroyo Seco, Spanish for dry wash, drains the southwestern San Gabriel Mountains and flows through Pasadena to its confluence with the Los Angeles River. The arroyo’s banks became a transportation corridor of trails, railroads, and highways and an enclave for industrialists and artists. For more than a century, its very name evoking more than a stream, it has been a Los Angeles County region overlaying municipalities, eras, and cultures. Eight museums are located in or around the arroyo. Famous attractions included Busch Gardens and Cawston Ostrich Farm, as well as a real-life field of dreams, Jackie Robinson Stadium, and the granddaddy sporting field of them all, the Rose Bowl. The nearby Jet Propulsion Laboratory’s storied principals used this wide dry wash to launch the forerunners of space probes.