The Rock of Cashel is one of the finest examples of medieval architecture to be found in Ireland. Set on a limestone outcrop, it was originally the seat of the high kings of Munster, and was donated to the Church in the 12th century. The scaffolding visible in the photograph is from a long-term conservation project to protect and preserve the elaborate wall paintings in Cormac's Chapel. It has been present since 2009.
(You can buy a print of this photograph here: https://buff.ly/2qlPNB1)