When the American Civil War began in 1861, the park commissioners decided to continue building Central Park, since significant parts of the park had already been completed.[129] Only three major structures were completed during the Civil War: the Music Stand and the Casino restaurant, both later demolished, and the Bethesda Terrace and Fountain.[130] By late 1861, the park south of 72nd Street had been completed, except for various fences.[131] Work had begun on the northern section of the park but was complicated by a need to preserve the historic McGowan's Pass.[132] The Upper Reservoir was completed the following year.[133]