El Campo Santo is a cemetery located at the Workman and Temple Family Homestead Museum, 15415 East Don Julian Road, in City of Industry, California. As one of the oldest private cemeteries in Southern California, El Campo Santo contains the remains of the pioneering Workman-Temple family as well as Pío Pico, the last governor of Alta California, and other prominent pioneer families. Within its low brick walls, the one-half acre cemetery features a Neoclassical mausoleum and a small cemetery plot surrounded by a Gothic Revival cast-iron fence.