The best part of Chinatown. Attached Source 19-Tour Guide Services . Since 2001 Christopher Linnell has driven sedan, stretch, van, limobus, minibus, motorized cable car, and DUKW "duck" tours in San Francisco, Marin's Muir Woods, and The Wine Country, including the... Relaxing at Peju Winery. This is what being a tour guide is all about.