The ceiling of the library at Killyleagh Castle, County Down. Although the building dates back to the 12th century when constructed by the Norman knight John de Courcy, its present appearance is the result of a complete renovation undertaken 1849-51 to the designs of Charles Lanyon. Exterior and interior alike display terrific exuberance, as well as a wide variety of sources of inspiration, as this ceiling demonstrates. Originally a gasolier would have hung from the centre of the plasterwork.