Centered on El Ranchito in Whittier, this site preserves the final home of Pío Pico, the last governor of Alta California under Mexican rule. Built after Pico began acquiring Rancho Paso de Bartolo in 1848, the adobe was repeatedly altered by floods, especially after the San Gabriel River changed course in 1867. Remade in a hybrid of Californio adobe and American-style design, the house reflects California’s transition after annexation. It also bears witness to Pico’s downfall, as he lost the property through a disputed deed and died impoverished. Saved by local preservationists in the early 20th century, it remains a rare meeting place of personal, environmental, and cultural history.

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