At the heart of is a long, white building called the de la Ossa adobe ranch. While the park's has been , it's good to know that the ranch can still be toured by special appointment; simply call the park staff to set up a time and date in advance. The park is open without an appointment, Wednesday through Sunday from 10 a.m. to 5 p.m.
The de la Ossa adobe building, according to Los Encino docent Michael Crosby's excellent historical guide Encino, was built in 1849 by Vincent de la Ossa, who operated the ranch as a roadhouse for weary travelers.
Crosby writes that from 1849 to 1949, when the Department of Parks and Recreation acquired the property, the ranch had changed ownership multiple times. It passed from the de la Ossas to the Garniers, the Oxararts, the Glesses and the Amestoys. In 1937, it gained historic monument status.
Click on the photo gallery above for a look inside the building. To see it for yourself, call the park on 818-784-4849 to set up an appointment.