san francisco, the blue sky and the skyline

active activities amazing america architecture arquitectura auto automobile azul beautiful blue buildings california cars cielo city ciudad common daily dailysituation day days edificios eeuu emblematic eua francisco historical hito hitos holiday holidays landmark landmarks metropolitan metropolitano movement ordinary pavement people san sanfrancisco shinning sidewalk sightseeings skies sky skyline streets summer sun urban urbanism urbanismo urbano usa vacacional vacaciones vacational walking world