The parklands at Birr Castle Demense stretch over 120 acres, (50 Hectare) and within this space you will find a wonderful collection of rare plants and trees set in a landscape of a lake, 2 rivers and waterfalls.


Birr Castle Demesne is one of the great gardens of Ireland with one of the most historic landscapes in the country that is home to an internationally important collection of plants.

Plant Collection

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.