Rancho La Puerta is just one hour from San Diego, but it feels a million miles away. Set on 3,000 acres between the sea and the desert, the resort has been a favorite spa destination since it opened in 1940 by the Szekely family, who still operate the place today. Here, the emphasis is on back-to-nature living, whether that means hiking in the valleys beneath Mount Kuchumao, practicing yoga in the beautifully landscaped gardens or eating meals from the ranch’s own organic farm, Rancho Tres Estre...