Boston Common (also known as "the Common") is a central public park in Boston, Massachusetts. It is sometimes erroneously referred to as the "Boston Commons". Dating from 1634, it is one of the oldest city parks in the United States. The Boston Common consists of 50 acres (20 ha) of land bounded by Tremont Street, Park Street, Beacon Street, Charles Street, and Boylston Street. The Common is part of the Emerald Necklace of parks and parkways that extend from the Common south to Franklin Park in Roxbury. A visitors' center for all of Boston is located on the Tremont Street side of the park.