From the humble orgins of a small fishing village known as Yerba Buena, the San Francisco grew rapidly due to the Califo旧金山是美国最美的城市之一，三面环海，以海湾大桥和金门大桥与对岸城市相连，金门大桥彷佛长虹横跨金门湾上，其优美的身影已成为旧金山最耀眼的地标。