San Francisco is the thirteenth most populous leader in the United States of America. How much do you really know about this vibrant metropolis? Take this quiz and find out!This app covers the geography, history and culture of San Francisco. Compare your results with your friends to add more spice to this already exciting quiz!android free apps, free games, fun quizz, challenge, game show, mobile, san francisco trivia, san francisco bay area, san francisco california questions, san francisco quiz