From
Wikipedia:
Central Park is a large public, urban park in the heart of New York City and is host to approximately twenty-five million visitors each year. Central Park has been a National Historic Landmark since 1963.
The park was designed by Frederick Law Olmsted and architect Calvert Vaux. While much of the park looks natural, it is in fact almost entirely landscaped. It contains several natural-looking lakes and ponds, extensive walking tracks, two ice-skating rinks (one of which is a swimming pool in July and August), the Central Park Zoo, the Central Park Conservatory Garden, a wildlife sanctuary, a large area of natural woods, a reservoir with an encircling running track, and the outdoor Delacorte Theater which hosts the "Shakespeare in the Park" summer festivals. 85% of the park's operating budget comes from private sources via the Central Park Conservancy, which manages the park pursuant to a contract with New York City Department of Parks and Recreation.
The State appointed a Central Park Commission to oversee the development of the park, and in 1857 the commission held a landscape design contest. Writer Frederick Law Olmsted and English architect Calvert Vaux developed the so-called "Greensward Plan," which was selected as the winning design. According to Olmsted, the park was "of great importance as the first real Park made in this century—a democratic development of the highest significance…," a view probably inspired by his stay, and various trips in Europe in 1850. During that trip he visited several parks, and was in particular impressed by Birkenhead Park on the Wirral Peninsula, near Liverpool, England and The Derby Arboretum in Derby, England.
Several influences came together in the design. Landscaped cemeteries, such as Mount Auburn (Cambridge, Massachusetts) and Green-Wood (Brooklyn, New York) had set an example of idyllic, naturalistic landscapes. The most influential innovations in the Central Park design were the "separate circulation systems" for pedestrians, horseback riders, and pleasure vehicles. The "crosstown" commercial traffic was entirely concealed in sunken roadways (today called "transverses") screened with densely planted shrub belts, so as not to disturb the impression of a rustic scene. The Greensward plan called for some 36 bridges, all designed by Vaux, ranging from rugged spans of Manhattan schist or granite, to lacy neo-gothic cast iron, no two alike. The ensemble of the formal line of the Mall's doubled allées of elms culminating at Bethesda Terrace, whose centerpiece is The Bethesda Fountain, with a composed view beyond of lake and woodland, was at the heart of the larger design.
Before the construction of the park could start, the area had to be cleared of its inhabitants, most of whom were quite poor and either free African-Americans or immigrants of either German or Irish origin. Most of them lived in smaller villages, such as Seneca Village, Harsenville, the Piggery District or the Convent of the Sisters of Charity. The roughly 1,600 working-class residents occupying the area at the time were evicted under the rule of eminent domain during 1857, and Seneca Village and parts of the other communities were torn down and removed in order to make room for the park.
During the construction of the park, Olmsted fought constant battles with the Park Commissioners, many of whom were appointees of the city's Democratic machine. In 1860, he was forced out for the first of many times as Central Park's Superintendent, and Andrew Haswell Green, the former president of New York City's Board of Education took over as the chairman of the commission. Despite the fact that he had relatively little experience, he still managed to accelerate the construction, as well as to finalize the negotiations for the purchase of an additional 65 acres (260,000 m2) at the north end of the park between 106th and 110th Streets, which would be used as the "rugged" part of the park, its swampy northeast corner dredged and reconstructed as the Harlem Meer.
Between 1860 and 1873, the construction of the park had come a long way, and most of the major hurdles had been overcome. During this period, more than 500,000 cubic feet (14,000 m³) of topsoil had been transported in from New Jersey, as the original soil wasn't fertile or substantial enough to sustain the various trees, shrubs, and plants the Greensward Plan called for. When the park was officially completed in 1873, more than ten million cartloads of material, including soil and rocks which were to be removed from the area had been manually dug up, and transported out of the park. Also included were the more than four million trees, shrubs and plants representing the approximately 1,500 species which were to lay the foundation for today's park.