The Public Garden, also known as Boston Public Garden, is a large park in the heart of Boston, Massachusetts, adjacent to Boston Common. It is a part of the Emerald Necklace system of parks, and is bounded by Charles Street and Boston Common to the east, Beacon Street and Beacon Hill to the north, Arlington Street and Back Bay to the west, and Boylston Street to the south. The Public Garden was the first public botanical garden in America.