Founded in 1148 by Toirdelbhach mac Diarmaida Ua Briain, Monasteranenagh Abbey became one of County Limerick’s most important Cistercian foundations. This reconstruction imagines the monastery during its earliest years, with newly completed stone buildings, steep roofs, narrow lancet windows, timber doors, and monks moving quietly through the surrounding grounds. The austere architecture reflects the Cistercian ideals of simplicity, discipline, prayer, and communal labour. Supported by the O’Brien dynasty, the abbey later expanded under Domnall Mór Ua Briain. Though centuries of conflict and collapse reduced it to ruins, its surviving walls remain a powerful monument to medieval Irish faith and craftsmanship.