We have visited the Napa Valley numerous times, and on almost every trip, we have watched the vintage Napa Valley Wine Train cruise past along tracks that roughly parallel Highway 29. Composed of restored 100-year-old Pullman rail cars once used as first-class coaches by the Northern Pacific Railway, the train runs for 36 miles from downtown Napa to St. Helena and is now pulled by restored 1950s-era locomotives. The tracks were originally laid in 1864 by Samuel Brannan, one of San Francisco’s first millionaires, with the aim of bringing people to his spas in Calistoga.