The Sánchez Adobe is the site of important regional history during the first three periods of California History. During Native California times the Aramai people established the village of Pruristac here. During the Spanish colonial period, it was an important agricultural outpost. During Mexican times, Francisco Sánchez, one-time Alcalde of Yerba Buena (later San Francisco), built his substantial adobe house at this site, which was completed in 1846. Lobbying efforts of the Historical Association inspired the County to obtain the five-acre site for a park in the 1940s. Since 1978, extensive archaeological investigations have been accomplished. Today, the County and the Historical Association are working on a master plan to improve the interpretive value of this unique location.
