What is recorded here

Birr Castle has stood in County Offaly since 1170, surviving O'Carroll rule, a fifteen-month siege, and repeated rebuilding. The Parsons family later turned the same grounds into a astronomical powerhouse, building the world's largest telescope in 1845 and drawing visitors from across the globe. That instrument was stripped during the First World War, yet the castle reappeared in public memory through restoration and a new heritage bid. Stone, brass, and moonlight still orbit the same place.

Birr Castle is recorded as a castle in County Offaly. Its open map record supplies this location and any linked names or public references.

Birr Castle, located in County Offaly, was originally built in the 15th century by the Butler family, Earls of Ormond, and later expanded in the 17th century by the Parsons family, who held it as part of their extensive estate. It is remembered for its historic astronomical observatory, built in the 18th century by the 3rd Earl of Rosse, which was once the largest telescope in the world.