Located in Larkin Valley near Watsonville, the two-story Castro Adobe, built between 1848 – 1849, is one of the finest examples of a rancho hacienda in the Monterey Bay area.

Friends of SC Parks & Rec is leading a multi-year restoration effort to preserve and interpret the Castro and is partnering with CA State Parks to open the adobe as a State Historic Park. The Castro Adobe will be the first State Historic Park in South County and only the second State Historic Park in Santa Cruz County (the first being Santa Cruz Mission State Historic Park).