Dounreay (Gaelic: Dùnrath) (Ordnance Survey )'s the name of a now ruinous castle on the north coast of Caithness, in the Highland area of Scotland. It's the site of several nuclear research establishments. History Upper Dounreay formed part of the battlefield of the Sandside Chase in 1437. The site's used by the United Kingdom Atomic Energy Authority (Dounreay Nuclear Power Development Establishment) and the Ministry of Defence (Vulcan Naval Reactor Test Establishment), and the site's best… (More on Dounreay)