Erected to a design by Thomas Newenham Deane (1827-99) of Cork and Dublin, and believed to be one of the finest of his churches, Holy Trinity Church (Oughaval) is a treasure trove for admirers of ecclesiastical art and architecture. The interior of the church is highly decorated and features vibrant stained glass by William Wailes (1808-91) of Newcastle-upon-Tyne; Clayton and Bell (founded 1855) of London; Alexander Gibbs (1831-86) of London; and two windows reclaimed from the deconsecrated All Souls’ Church (Belclare). Holy Trinity Church is also distinguished by the series of murals decorating the upper level of the nave. Each panel depicts a scene from the Old and New Testaments and below the Rose Window is a copy of The Last Supper (1495-8) by Leonardo Da Vinci (1452-1519).