The famous Napa Valley Wine train is a 36-mile round-trip from downtown Napa to the charming landscapes of St. Helena and back. During its classic journey around the vineyards, this train stops at some of the most celebrated Napa Valley wineries. First-time visitors should try the Ambassador Winery Tour, which covers two of Napa Valley's most popular wineries - Charles Krug Winery and Raymond Vineyards. There's also a half-day Grgich Hills Winery Tour, where the two-hour train ride is followed by wine tasting at Grgish Hills Estate.