This small space is a hidden gem of Celtic Revival art. It was painted by Sister Concepta Lynch, who began the work in 1920 and completed it in 1936. The Oratory was built at the end of World War I at the Dominican Convent, and has been preserved for its artistic significance. Interior surfaces are hand painted with intricate detail, combining flora and fauna, Celtic crosses and knot work to remarkable effect. In addition, there are several stained glass windows by Harry Clarke.