Birr Castle Demesne is an exciting attraction with award-winning gardens, Great Telescope, Ireland’s tallest treehouse and lots more.

The stunning gardens at Birr Castle are home to unending botanical marvels with an abundance of exotic flora to be found throughout, along with feats of scientific and engineering wonder for all to view and enjoy.

Explore the gardens which are home to the Great Telescope, once the largest in the world, created by the 3rd Earl of Rosse in the 1840’s. Don’t miss Ireland’s tallest treehouse in the Treehouse Adventure Playground, alongside sandpits and so much more.

The award-winning formal gardens, surrounded by the hornbeam cloister walk, proudly boasts the world’s tallest box hedges along with plants exclusive to Birr Castle Gardens. The 120 acres of gardens house an impressive worldwide plant collection of rare species from around the world, including over 40 champion trees of the British Isles.

The historic Science Centre transports visitors back to a time when Birr Castle was a hub of scientific discovery and innovation. The interactive galleries reveal the wonders of early photography, engineering and astronomy.

The castle, which has been a family home since 1620, opens its doors during the summer months for guided tours, offering visitors the chance to visit this private residence.
Their 400th Anniversary programme includes a fascinating mix of events from special castle tours, to family quests and challenges, educational programmes including science and nature detective camps, to walking tours, astronomy events, art exhibitions, garden parties and the world champion ballooning competition.

No trip to the gardens would be complete without visiting the Gift Shop or Courtyard Café.

  • Award-winning gardens, home to the world’s tallest box hedges and rare plant life
  • The Great Telescope – once the largest in the world
  • Historic Science Centre
  • Guided summer tours of Birr Castle
  • The Treehouse Adventure Playground featuring Ireland’s tallest treehouse & more

Open Daily Year Round

Tickets available on line from must be pre-purchased.

January to March: 10.00-16.30
Mid-March to October: 09.00-18.00
November to December: 10.00-16.00

Last admission: 1 hour before closing
Visit duration: A minimum of 1.5 to 2 hours
Closed: December 25, 26 and January 1


Admission Prices 2020

Adult: €9.50
Child (aged 5-16yrs): €5.00
Child (under 5): Free
Family (2 adults & 2 children): €26.00

Castle Tour (over 12 years only) €20.00

Useful Information

Check out their range of facilities, services, accessibility and other useful information.

LANGUAGES: Free leaflets and site map available in English, French, German, Spanish and Mandarin.

DINING / REFRESHMENTS: Courtyard Café/ open March to November.

SHOPPING: Gift shop selling souvenirs and gift items.

PARKING: Car and coach parking available off-site (nearby).

WHEELCHAIR ACCESS: Gardens and Science Centre are partially wheelchair accessible with accessible toilets. The guided Castle tours are not accessible.

GROUPS: Group rates available (minimum 10 people). Pre-booking required.

Getting There

Located in the centre of Birr town, Birr Castle Demesne is within 90 minutes’ drive of most major Irish cities.

Map Location: 53.097301, -7.915683
Contact Birr Castle Demesne

Birr, Co. Offaly, Ireland

Eircode: R42 PD79
T: +353 (0)57 912 0336
‘Your Daily Adventure’ is Ireland’s #1 Visitor Guide… by Smiles! It’s also FREE.

‘Your Daily Adventure’ is loved by visitors. There is so much to enjoy, we’ve had to create six regional editions to cover every part of Ireland.

Each FREE edition is packed with up-to-date information on all there is to do, see and enjoy around Ireland.  Watch out for them in your travels, or ask for them by name ‘Your Daily Adventure’. They are stocked in most places visitors’ frequent – particularly visitor-friendly accommodation!

Always Check Opening Dates and Times

It is always advisable to check the opening dates and times of any attraction or business you intend to visit. Check their website or give them a call.