Narrated summary of the history and attractions of San Francisco. View along length of suspension portion of Bay Bridge from the east; LS of Bay Bridge from west; from east end of bridge showing auto traffic moving across bridge; windshield view in traffic on the bridge, suspension, cantilever, then tunnel portions; view of Golden Gate Bridge from southern end; panning aerial shot from the west of Golden Gat Bridge; bridge tower view of traffic on bridge, pan to view Marin County end of bridge; similar shot from bridge tower facing south, viewing Presidio;