Spas in the Bay Area are concentrated in three locations: San Francisco, wine country and Silicon Valley. Many luxury hotels in San Francisco feature full-service spas, plus there are many independent spas that offer unique treatments. San Francisco is also home to many world-famous yogis, if you’d like to combine your yoga practice with your spa treatment. Most Silicon Valley spas can be found near major shopping centers. While wine country is home to the most destination spas that offer mineral waters, mud baths, and volcanic ash therapies, in addition to regional-themed grape seed scrubs, and massage with Chardonnay or Cabernet.