Since the 1920s, Camp Mather has beckoned to outdoor enthusiasts to come enjoy restful, carefree times in the Sierra. Bordering Yosemite National Park, Mather was established as a construction camp for laborers building the O'Shaughnessy Dam in the Hetch Hetchy Valley. The camp began welcoming San Franciscans after construction was completed and then, as now, offers a welcome respite from city life. Guests stay in employee cabins and swim in the lake near the site of a former sawmill. Horseback riding, hiking, swimming, and three-squares-a-day have long been hallmarks of the Mather experience. From its humble Hog Ranch beginnings through the Mather Station days, Camp Mather has been a cherished spot enjoyed by multiple generations of San Francisco families.