Birr Castle Demesne, 120 acres of parklands & gardens, a 17th century castle, and the home of the remarkable Parsons family, famed for their discoveries in scientific & engineering feats.

Prepare to be amazed by the extraordinary achievements of the Parsons family who have a global reputation for their ground-breaking inventions and feats in the fields of science, engineering, photography, astronomy, and botany. For over 400 years, this remarkable family has resided at the romantic and inspirational setting of Birr Castle Demesne that is now home to the 7th Earl and Countess of Rosse.

Set in the heritage town of Birr on 120 acres of parklands and gardens, this castle demesne boasts a rare collection of over 5000 species of trees and plants, wonderful wildlife, and peaceful walks along rivers, waterfalls, and lake.

Suitable and enjoyed by nature lovers, gardening enthusiasts, scientists, historians, families, family groups and photographers. The multiple highlights of a visit to this historic demesne include:

Science | world famous Great Telescope (1845) | possibly world’s oldest intact darkroom | 7 gallery science centre with Hologram and welcome video and Turbine
Parklands & Gardens | 5000 species of trees & plants | world’s tallest box hedge | Ireland’s tallest treehouse
120-acre (50-Hectaces) Demesne | parklands | river walks | award-winning gardens | waterfalls | lake
Parsons Family | insights into the Parsons family story at Birr Castle Demesne for over 400 years