University of California, Berkeley Visitor Center

90-minute student-led walking tours are offered seven days a week. (M-Sa at 10AM, Su at 1PM). Be prepared to climb the hilly campus terrain. For a break, take a seat in the Doe Library's reading room (but don't bring the kids or bother the students). If you're touring alone, the main attraction is a ride up the [http://visitors.berkeley.edu/camp/index.shtml Campanile / Sather Tower] ($3 adults / $2 seniors and children < 18 / free for Cal students with id), which offers sweeping views of the Bay Area.