The Aetna Springs Resort is located in Aetna Springs and is listed on the National Register of Historic Places. The resort and spa originally developed by Len D. Owens, Frances Marion’s father in the 1870s and quickly became a popular summertime destination for vacationers from San Francisco and Hollywood. One of the first golf courses west of the Mississippi River was built on the resort's property in 1891. Ronald Reagan announced his intention to run for the office of Governor of California at the resort. On June 9, 2009 it was announced that the Aetna Springs Resort would close.Snell Valley lies to the north of Aetna Springs. In early 2012 the Napa County Planning Commission approved plans to renovate existing 28 structures and build a new lodge on the property.