The South End is a neighborhood of Boston, Massachusetts. It is bordered by Back Bay, Chinatown, and Roxbury. It is distinguished from other neighborhoods by its Victorian style houses and the many parks in and around the area. The South End is the largest intact Victorian row house district in the country, as it is made up of over 300 acres. Eleven residential parks are contained within the South End. In 1973, the South End was listed in the National Register of Historic Places. Much of the South End was originally marshlands in Boston's South Bay. After being filled in, construction of the neighborhood began in 1849.