Tower Grove South is a neighborhood of St. Louis, Missouri. Formerly known as Oak Hill, Tower Grove South is bounded by Arsenal Street on the north, Chippewa Street on the south, Kingshighway Boulevard on the west, and Grand Boulevard on the east. The majority of the neighborhood was built following the extension of streetcar lines from downtown St. Louis. Commercial development in the neighborhood is concentrated on Grand Boulevard in the east and Morganford Road in the west of the neighborhood.