The Orcutt Ranch Horticulture Center, formally known as Rancho Sombra del Roble, is a Los Angeles Historic-Cultural Monument (HCM #31) located in the West Hills section of Los Angeles, California, USA.

[6] Visitors are surprised to find that the design of the home prominently incorporates bas-relief Swastika architectural decoration.

[6] A 24-acre (10 ha) portion of the original estate, including the residence, gardens, oaks and citrus orchard, was designated as a Historic-Cultural Monument in January 1965.

[5] Some of the more unusual trees found at the ranch are Purple Lily Magnolias, Lady Palms ( Raphis excelsus ) native to Asia, Bunya Bunyas ( Araucaria bidwillii ) evergreen native to Australia with cones weighing up to 15 pounds (7 kg)), Cork Oaks ( Quercus suber ), and one of the many Coast Live Oaks ( Quercus agrifolia ) measuring 32 feet (10 m) in circumference, believed to be 700 years old.

[8] The Los Angeles Recreation and Parks Department operates Orcutt Ranch,[9] which is available to be rented for special events.