The main building is flanked on either side by -story brick and granite buildings, called the North Market and South Market. Part of the market's original development, these buildings have been more extensively altered than the main building. The entire complex was designated a National Historic Landmark and listed on the National Register of Historic Places in 1966. The central domed building was designated a Boston Landmark by the Boston Landmarks Commission in 1996. The North and South Market buildings are currently pending Boston Landmarks.