Glamorgan (Welsh: Sir Morgannwg) is a traditional county in south Wales. It includes the two largest cities in Wales, Cardiff and Swansea, an area of rich lowland agricultural countryside, and upland valleys formerly famous for the mining of coal. The county lies on the north shore of the Bristol Channel. In 1974 Glamorgan was divided into three new counties: Mid, South and West Glamorgan. In 1996 local government boundaries in the area were further redrawn, dividing Glamorgan into a number of Unitary Authorities.