Boston Common is a central public park in Boston, Massachusetts. It is sometimes erroneously referred to as the "Boston Commons". Dating from 1634, it is the oldest city park in the United States. Wikipedia

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