Birr Castle Demesne

Birr, Offaly

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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.

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Opening hours

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

Latitude: 53.0965707

Longitude: -7.9140353