Calistoga

In addition to its wineries, Calistoga is noted for its mineral water, hot mineral springs, mud baths, steam baths, and massages. The Calistoga Hot Springs Resort was founded in 1859 by maverick entrepreneur Sam Brannan, whose ambition was to found "the Saratoga of California." He reputedly tripped up the pronunciation of the phrase at a formal banquet—it came out "Calistoga"—and the name stuck. There's a relatively mellow vibe here—it's significantly less chichi than Yountville or Healdsburg.