- Blue and Gold Fleet
- San Francisco - Commuting and tour ferries with ferry schedule, bay cruises, alcatraz tickets, private charters, map, and parking. Includes also information for Alcatraz day and evening tours. - California Wine Tours and Transportation
- Sonoma - Offers day tours in the Napa and Sonoma wine country. Luxury buses, limousines, vans, and sedans available for private charter. - Angel Island TramTours and Catered Events
- Pleasanton - Located in the middle of the San Francisco Bay. - Ricochet Ridge Ranch Horse Riding Vacations
- Fort Bragg - Unique riding holidays on the beach and redwood forest: accommodation at Bed & Breakfast inns, hot tubs, entertainment, English or Western instruction. - City Guides
- San Francisco - Free walking tours of the city. - Red and White Fleet
- San Francisco - Ferry, cruise and tour operator on the SF Bay. - Getaway Adventures
- Wine Country - Biking, hiking, and kayak tours of the Napa Valley and the Big Island of Hawaii. - Beau Wine Tours
- Napa - Offers private, upscale wine tasting tours of the Napa Valley and Sonoma wine country. - San Francisco Ghost Hunt
- San Francisco - Walk to some of San Francisco's most notorious haunted places and meet the enchanting ghosts that call them home. Departing year-round. - Footloose Forays
- Santa Rosa - Offering naturalist tours in Northern California and beyond. - Above the Wine Country Balloons & Tours
- Sebastopol - Destination management service specialising in Northern California hot air ballooning. Also offers wine tours, executive transportation, and accommodation packages. - San Francisco Shuttle Tours
- San Francisco - Comprehensive tours of San Francisco's most popular attractions. Features more tour stops, free ferry cruises and refreshments, and a separate tour guide from the driver. - Victorian Home Walk
- San Francisco - Offering small walking tours of San Francisco's Victorians, taking people "off the beaten path" where tour buses and mini vans are prohibited. - Spring Training Tours
- Livermore - Offers baseball travel packages. - Appellation Tours
- Napa - Specialises in private wine tasting tours by limousine. Custom packages available for both Napa valley and the Sonoma wine country. - Aim Adventures
- Oakley - Offering packages for hunting big game, upland gamebirds and waterfowl worldwide. - Wok Wiz
- San Francisco - Culinary and historical walking tours of San Francisco's Chinatown, North Beach, and Asia. - Soussan's Wine Tours
- Santa Rosa - Offers tours with reserve tastings, personal wine shopping, and education classes. - Budrick Vineyard Tours
- Sonoma - Offer daily viticuture tours in Sonoma and Napa Counties as well as gift certificates, event planning, and wine seminars. - All San Francisco Tours
- San Francisco - Offers tours of the city, Golden Gate Bridge, Alcatraz Island, Chinatown, and more. - Vampire Tour of San Francisco, The
- San Francisco - Explore the gothic side of Nob Hill and learn how vampires have contributed to the shaping of San Francisco as we know it today. - Black Panther Legacy Tours
- Oakland - Provides a historical bus tour of sites in Oakland, California which were significant to the Black Panther Party and the civil rights movement. - Haute LaTOUR
- Napa - Specialising in small, private wine tours for two to six people in the Napa Valley. - Fire Engine Tours & Adventures
- San Francisco - Offers sightseeing tours, charters, parties, special events, and promotions. - Nubian Cruises
- San Francisco - Offering cruises to Egypt, Turkey, Greece, Morocco and the East Mediterranean and North Africa. - Outback Adventures
- San Jose - Guide service and rental shop specialising in kayaking, backpacking, and climbing in California. - Serendipity Land Yachts
- Santa Clara - Bus charters serving San Francisco, the Monterey Peninsula, and Silicon Valley. - San Francisco Tours
- San Francisco - Online tour reservations for San Francisco, Muir Woods, Alcatraz, Wine Country, Monterey/Carmel and Yosemite National Park. - Super Sightseeing Tours
- San Francisco - Offers a wide range of tours in the San Francisco Bay Area. - A Friend in Town
- San Francisco - Offering guided tours of San Francisco, Napa and the Wine Country, Silicon Valley, and surrounding areas. - Wine Country Jeep Tours
- Windsor - Winery tours in Sonoma and Napa. Also offering redwood, off-road, and coastal tours. - Sonoma Cattle Company and Napa Valley Trail Rides
- Glen Ellen - Professionally guided horseback riding adventures for novice and expert riders. - Hummer Adventures
- Burlingame - Features classified listings of Hummers, accessories, and gear. - HobNob Tours
- San Francisco - Offers San Francisco historical walking tours of Nob Hill and the financial district. - Escape Artist Tours, Inc.
- Half Moon Bay - Offers travellers various activities in San Francisco, Napa Valley, Lake Tahoe and surrounding Bay Area. - Lodging and Llamas
- Fort Bragg - Three-bedroom holiday flat just south of Fort Bragg, plus three different llama treks. - Here's Looking at Don Herron's Official Website
- San Francisco - Home on the Web for San Francisco's famous Dashiell Hammett Tour. - PVA Travel Planning
- Palo Alto - Operates educational tours in the form of luxury and expedition cruises, private rail trips, and more. Some destinations include Arabia, India, Bhutan, and Germany. - Cyndi Recommends
- San Francisco - Offers travel consulting services and day tours for visitors to the San Francisco Bay Area. - Wine Destinations
- Napa - Offering private wine tours and interactive culinary demonstrations. - Lost Coast Trail Rides
- Fort Bragg - Leads horseback riding trips in Mendocino County featuring the ocean and forest trails of the Lost Coast. - On The Level SF
- San Francisco - Offers guided and self-guided walks exploring the city by foot. - Country Spokes Bicycle Tours
- Walnut Creek - Offers bicycle tours in California with gourmet dining and luxury camping. - Tours of Napa
- Napa - Wine tour service to Napa Valley and Sonoma County. - Behind the Scenes
- Napa - Full service destination and event management company. Services include Wine Country tours, art and shopping nights in San Francisco, cigar nights, etc. - Grape to Glass Wine Tours
- San Francisco - Private educational wine tours in Napa and Sonoma, including accommodations and transportation. - Great Pacific Tour Co., The
- San Francisco - Offers sightseeing tours of the San Francisco Bay Area. - Wine Country Reservations
- Wine Country - Features Napa Valley travel planing, hotel reservations, activities, and wine tasting appointments. - Serku Adventure Treks
- Oakland - Provides trekking, rafting, and safari's exclusively in Nepal, the Himalayas, Chitwan, and on rivers, specialising in small groups of six to ten people. - California Rivers Paddlesports
- Windsor - Rent your own kayak or join us for a complete guided kayak tour to explore the rivers and ocean bays of Northern California Wine Country. - Mr. Toad's Tours
- San Francisco - Hop on one of Mr. Toad's pre-1930s vehicles for a once in a lifetime tour into the heart of San Francisco, California. - Quality Tours
- Pacifica - Private customised & off the beaten path tours of San Francisco and the surrounding area. - Wine Tutor, The
- Saint Helena - John Thoreen guides two-day open, private, or custom excursions through Napa Valley. - Napa Valley Tours & Trail Hikes
- Napa - San Francisco Tour Guide
- San Francisco - Provides tour guide service in English, Japanese, and Indonesian/Malay. I am a 14-year resident and am a travel guide writer and journalist. - Day in Nature, A
- San Francisco - Offering small, custom, half- and all-day naturalist-led nature tours from San Francisco to Northern California national parks and wine country. - SF Activities 4 Less
- San Francisco - Offers a Deluxe City Tour of San Francisco and daily tours to Alcatraz, Wine Country, Carmel and Monterey, Yosemite, and Muir woods, and also provides hotel reservations. - Explorer's Club
- San Francisco - Tours for children and/or their families of San Francisco and the Bay Area. Day trips packed with fun and learning opportunities.
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