Follow the Yellow Brick...Dome?

I've often felt (and said) that San Francisco is like the Land of Oz - a beautiful, magical, but often elusive place, filled with technicolor characters and almost otherworldly vistas. Even a morning walk in Chrissy Field can feel like a walk through the pages of a children's fairy tale (that is, if children's fairy tales included joggers, tourists, and professional dog-walkers - all listening to iPods, talking on cellphones, and slurping free-trade, organic non-fat low-foam lattes out of recycled paper coffee cups...).