North and Central America->United States->New York->New York
In autumn 1857 Olmsted became Superintendent of Central Park, then still an undeveloped site, in New York. The following spring he and Calvert Vaux, the former collaborator of A. J. Downing, won the public competition to design the (now) 341 ha park. Their plan, Greensward, was the only one that proposed to run the four required transverse roads across the park below the line of sight. It also provided the greatest expanse of meadow of any entry. Appointed Architect-in-Chief of the park in early 1858, Olmsted directed its construction, coordinating the work of engineers, architects and other professionals. By the outbreak of the Civil War in 1861, construction of the park was nearly complete below the reservoir at 79th Street; the park is recorded as completed in 1873. It was designated a National Historic Landmark in 1962.