Way before Walt Disney bought the property that would become Disneyland. Horses and other animals lived on a ranch north of the orange groves razed for the theme park. In fact, Disney used to saddle up on the ranches horses to tour the property he was considering buying. One day he told a ranch employee that the check was ready.
The Corral is actually considered Disneyland's first attraction starting in 1954, before the park opened. Although the corral was not open to the public back then, the ranch was more than ten acres.
Circle D Corral was moved offsite to Norco in 2016 as Circle D Ranch To make room for Star Wars The Galaxy's Edge.