The Alameda/Oakland Ferry runs several times daily between San Francisco's Ferry Building or Pier 39, Alameda, and the Clay Street dock near Oakland's Jack London Square; one-way tickets are $5.50. The trip lasts 30 to 45 minutes, depending on your departure point, and leads to the heart of Oakland's gentrified shopping and restaurant district. Arriving in Oakland by boat conveys a historic sense of the city's heyday as a World War II-era shipbuilding center. Purchase tickets on board.
Alameda/Oakland Ferry (510/522-3300. www.eastbayferry.com).