High Quality Content by WIKIPEDIA articles! The Devonshire Royal Hospital building (now popularly known as the Devonshire Dome) is a Grade II* listed 18th-century former stable block located in Buxton, Derbyshire. It was added to by architect Robert Rippon Duke, with what was then the world`s largest unsupported dome, with a diameter of 44.2 metres (145 ft). It is now the site of the Devonshire campus of the University of Derby.