Colton’s Map of Boston and Adjacent Cities shows a far different Boston in 1860 than at the turn of the nineteenth century. South Boston, on the lower right, was annexed in 1804 and East Boston, on the upper right, was laid out in 1833. Boston’s “New” South End, on the lower left, was a once barren stretch of land known as the Neck that connected Boston to the mainland at Roxbury, Massachusetts. The area was infilled in the 1830s to accommodate the expansion of Boston. Laid in a grid plan, like the South End, the beginnings of the Back Bay can be seen to the left of the Public Garden.