Open All Year
16 Mar to 31 Oct
0900hrs - 1800hrs
1 Nov to 15 Mar
1000hrs - 1600hrs
The Castle Courtyard Café
April ~ October
The Discovery Gift Shop
Open every day of year
Welcome to Birr Castle Demesne, Co Offaly
We welcome you to our Demesne of Discovery, which offers something for everyone to enjoy and is especially interesting and educational for families. Starting with Ireland’s Historic Science Centre in the old stable block, with its café and shop you can then explore 50 hectares of park land, visit the magnificent Formal Gardens and terraces and discover Birr’s world famous engineering and astronomical wonder - the Great Telescope. We look forward to welcoming you on a voyage of Discovery.
The Demesne and all the wonders that it contains is administered by the Birr Scientific and Heritage Foundation, a charitable body – click here to find out more.
The Gardens at Birr are arguably the greatest gardens in the Republic of Ireland and well known internationally. They are set in a landscape of 50 hectares and contain some of the largest and rarest tree species found in Ireland and the world...
Travel back to the time of the earlier Earls and Countesses of Rosse, when Birr Castle was a hub of scientific discovery and innovation. Discover astronomical instruments, cameras, photographs and photographic equipment used...
The Discovery Gift Shop at Birr Castle Demesne offers gifts for every taste.
Birr Castle Seasonal highlights
Click on the images to view our seasonal highlights photo gallery