Listed buildings in Cardiff Bay Dock to the east and the mainline railway to the north. Listed buildings in Cardiff Bay There are many listed buildings in Cardiff Bay, part of Cardiff, capital city of Wales. A listed building is one considered to be of special architectural, historical or cultural significance, and has restrictions on amendments or demolition. Buildings are listed as either Grade I, II* and II buildings lists, with the Grade I being the most important. Cardiff Bay describes the redeveloped docklands area of the city, including the neighbourhoods of Butetown and Atlantic Wharf, previously better known as Tiger Bay. It is bounded
Cardiff Bay Barrage 1987, prior to approval of the construction of the barrage, the Cardiff Bay Development Corporation was established to proceed with redeveloping the docklands, a sixth of the entire area of the city of Cardiff. In November 1999, the barrage was completed, with the sluice gates closed at high water, to retain the seawater from the Bristol Channel within the 500 acre (200 hectare) bay. At first major water quality problems ensued which required the bay to be drained dry overnight and refilled each day. Eventually, oxygenation systems (based on those used at the Swansea Barrage) were installed which improved water