External view of the Sellafield (formerly Windscale) nuclear power station and reprocessing plant, Cumbria, UK. At left are the short, stubby cooling towers of the Calder Hall Magnox nuclear reactors. The two cube-shaped buildings to the right of the cooling towers house the original Windscale reactors which were closed after a major fire in 1957. The metallic dome houses a prototype AGR (Advanced Gas-cooled Reactor), now disused. Part of the nuclear fuel reprocessing plant is seen to right of the AGR.