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Open daily from 09:00 – 18.00

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Welcome to Birr Castle Demesne

Birr Castle Demesne is set in the heritage town of Birr on 120 acres of parklands and gardens, this demesne boasts a rare collection of over 5000 species of trees and plants, an array of wildlife, and peaceful walks along rivers, waterfalls, and lake. Choice of trails and an array of events hosted throughout the year.

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.

What you can enjoy and explore during your visit 120 acres of parklands & gardens, one of Irelands most treasured plant collections, a variety of trails, the Great Telescope, the Lunar Heat Machine, one of the world’s oldest complete darkrooms with hologram, welcome videos, Treehouse playground and Ireland's Historic Science Centre.

Suitable and enjoyed by nature lovers, gardening enthusiasts, families, family groups, photographers, scientists, and historians.

Birr Castle Demesne is set in the heritage town of Birr on 120 acres of parklands and gardens, this demesne boasts a rare collection of over 5000 species of trees and plants, an array of wildlife, and peaceful walks along rivers, waterfalls, and lake. Choice of trails and an array of events hosted throughout the year.

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Key Attractions

Birr Castle Demesne is not just a historic landmark; it is a living testament to Ireland's cultural and scientific heritage. Whether exploring the castle's rich history, marveling at the wonders of the universe, or simply basking in the serenity of the gardens, visitors are sure to be captivated by the allure of this remarkable Demesne.

Children Playing Meadow Birr Castle Demesne

Fun filled memory making day out for all who visit Birr Castle Demesne

The Award-Winning Gardens of Birr Castle Demesne in Ireland are both rich in amazing feats of science and engineering, as well as rare trees and flowers, wonderful wildlife, walks along peaceful rivers and the lake. Celebrating 400 years in 2021, this remarkable family have resided at the romantic and inspirational setting of Birr Castle Demesne, that is now home to the 7th Earl of Rosse. The Parsons family invite you to explore one of the most extraordinary places in Ireland. Created over generations it is an environmental and a scientific time capsule.

Become A Friend of Birr Castle Demesne

By becoming a friend of Birr Castle Demesne, you are helping to preserve one of Ireland’s most extraordinary places. Created over 400 years, Birr Castle Demesne is an environmental and scientific time capsule, whilst continuing to live, breath and evolve into a place of beauty and inspiration.

Friends memberships are available for 3 months, 6 months or 12 months. We welcome individual and family memberships.

Membership benefits:

  • Unlimited access to the gardens, Science Centre and Treehouse Playground within the demesne opening hours.
  • Walking routes totaling 10 km of trails to enjoy.
  • Regular email newsletter keeping you up to date with news and events.
  • 10% discount in the gift shop (excluding books).
  • Dogs allowed (Strict guidelines apply in line with the dog’s acts).
  • 4 Complimentary Guest passes with each 12-month membership taken out.
Annual Memberships

Recent Google Reviews

Sean mullen
Sean mullen
2024-07-10
An amazing property and museum. The telescope was awesome, the largest in.the world from.1845 to 1917. The marine engine designed and built by Charles Parsons powered the mighty Titanic!
Akshay Dhamankar
Akshay Dhamankar
2024-07-09
Great outing on a sunny day. The premises are huge and consist of the castle, a formal garden, plains, a few plantations, and a giant telescope. You can spend around 2-2.5hours exploring the entire place. The castle has guided tours as well. They're timed, call for timings. The entrance is located on the Science centre pin on maps. There's a small town centre car park and plenty of street parking. There's a nice café at the entrance, and they often offer soft serve ice cream. Toilet facilities are available at the reception only. Recommended for a nice family day out.
Francis Cummins
Francis Cummins
2024-07-09
Beautiful garden, a lovely play area just inside the entrance for the kids to enjoy. Lots of signs to help you around the tracks and you get a map when you enter.
keith sothern
keith sothern
2024-07-09
Fathers Day 2024….. slightly hungover from bbq the previous day so we decided to go somewhere close to us for a walk (90 minute drive, wondering if my father is hitting the pot holes on purpose) Can’t say I was looking forward to it as Birr has never been on any itinerary I’ve ever set up but I trusted in my sisters instincts. Absolutely delighted I did. They’ve done a phenomenal job with the castle and the surrounding area. I’ve a feral 5 year old so the play area was right up his alley, plenty of trees to scamper up, though I doubt it was allowed. Lovely walk around with a few little areas to explore (there is a leviathan living in the koi pond which my son couldn’t get enough of) Finished with a little bite to eat and coffee at the on site restaurant. I didn’t take pictures as I really thought my hangover was about to end me. But I do recall thinking the salad was very nice and the coffee was helping prolong my existence.
Ankur Jaiswal
Ankur Jaiswal
2024-07-09
Simply Amazing and kind of breathtaking place in Ireland considering natural beauty, castle, great trails, history including giant telescope which was world biggest for a long while.
Eimear Broderick
Eimear Broderick
2024-07-08
Fabulous day out. Amazing staff, great playground and lovely coffee!
Castle Under Tree Meadow

Gift Card

Gift Cards can be used at Birr Castle Demesne for the purchase of Friends Membership, General Admission Tickets, Guided Tours and towards items in our Gift Shop.

Did You Know?

Discover intriguing facts and stories in our 'Did You Know?' unraveling hidden gems and enriching your knowledge journey.

Irelands Historic Science Centre

The science story is revealed through the wonders of early photography, engineering and astronomy with a special emphasis on the brilliant design and assembly of the world famous Great Leviathan Telescope.

As you visit the Historic Science Centre you will discover astronomical instruments, cameras, photographs and photographic equipment used by the Third and Fourth Earls and Mary, Countess of Rosse, in the middle and late 1800s.

Also on display is electrical and engineering equipment originally belonging to Charles Parsons and used in his experiments as well as a large area devoted to the botanical work carried out in the Demesne.

Ireland's Historic Science Centre Hologram