A former dairy land, Civil War fortresses, an urban National Park, the city’s “second Chinatown” and the homes of the famous surround an equally famous bridge. Called “the bridge that couldn’t be built,” the Golden Gate Bridge is one of the world’s most famous landmarks. Its southern approach via Hwy. 1 and 101 traverses some of the city’s most scenic and historic areas including the Presidio of San Francisco and the Marina, site of the 1915 Panama-Pacific International Exposition. The outdoor cafes of Union Street in Cow Hollow, a former dairy land, are ideal spots for people watching and gazing up at the mansions of Pacific Heights. Outer Sacramento Street and Laurel Heights have blossomed into pleasant shopping sectors. The Richmond District, which borders Golden Gate Park, sprouted a second Chinatown along Clement Street in the early 70s.