Central Park is an urban park in the New York City borough of Manhattan. It was initially opened in 1857, on 778 acres of city-owned land. In 1858, Frederick Law Olmsted and Calvert Vaux won a design competition to improve and expand the park with a plan they titled the Greensward Plan. Wikipedia

Grant Park is a large urban park in the Loop community area of Chicago. Located in Chicago's central business district, the park's most notable features are Millennium Park, Buckingham Fountain, the Art Institute of Chicago and the Museum Campus. Wikipedia