Nestled in Sonoita Valley along the banks of Sonoita Creek, just 15 miles north of Mexico, Circle Z Guest Ranch welcomes vacationers to experience a taste of the Old West, with the comfortable pleasures of a traditional family-style ranch but without the risks. Horseback riding, relaxation, and cowboy cookouts have been the ranch's main attractions for the past 90 years, earning Circle Z the distinction of being the oldest continuously operating guest ranch in Arizona. It evolved from a four-room adobe homestead to a working cattle ranch before becoming a highly profitable sheepherding operation. In 1924, brothers Carl and Lee Zinsmeister arrived in Patagonia with a vision of developing a dude ranch with a resort feel. They purchased 5,000 acres of the San José de Sonoita land grant, which included the Sanford estate. Circle Z opened in 1926 and quickly became one of the finest guest ranches in the state. Today, the Nash family operates this memorable ranch famous for its well-trained horses and miles of scenic trails.