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"Aurora Borealis to be visible in Ireland tonight - as long as it isn't cloudy" according to Peter T Gallagher, Director of DIAS Dunsink Observatory (via TheJournal.ie) jrnl.ie/6679681

Great news this World Heritage Day as DIAS Dunsink Observatory and Birr Castle Demesne are added to Ireland’s Tentative List of UNESCO World Heritage Properties. This is a key step on our journey. Read more on dias.ie/2025/04/18/aoi… #WorldHeritageDay Armagh Observatory & Planetarium

🚨Big news on #WorldHeritageDay! Birr, Dunsink & Armagh Observatories have been added to Ireland’s UNESCO Tentative List! A stellar step toward global recognition of our scientific heritage! #BirrCastleDemesne #IrishHeritage #AOI #UNESCO Read more: irishtimes.com/ireland/2025/0…

The Historic Astronomical Observatories of Ireland have been added to the World Heritage Tentative List for Ireland. This cross-border partnership comprises Armagh Planetarium & Observatory, Birr Castle & Demesne, and Dunsink Observatory House. Learn More: bit.ly/3Yz9tlY

🏰 GUIDED CASTLE TOURS RETURN — FRI 16 MAY! This summer, step inside the beautiful interiors of Birr Castle for an unforgettable guided tour! ✨ Explore rich history, family stories & hidden treasures. 🎟 Book now: birrcastle.com

The Great Rosse Telescope in Birr, County Offaly WATCH: RTÉ News reports #OnThisDay in 1968 Birr Castle Demesne rte.ie/archives/2023/…

We were delighted to host the Dark Skies AGM at the stunning Birr Castle Demesne! 🌌 A special thank you to Offaly County Council for attending and supporting the event. Excited for the future of dark sky conservation! ✨ #DarkSkies #AGM #BirrCastleDemesne 📸: Terry Moseley

💜 The wisteria is absolutely stunning—like a lavender waterfall in full bloom. Every petal is pure magic. Come see the Demesne at its most breathtaking! 🌸 #WisteriaWonder #BirrCastleDemesne #VisitOffaly

🏰 Castle Tours Return Tomorrow! We're thrilled to reopen Birr Castle for guided tours starting Friday, 16 May! 🎟️ Book now: birrcastle.com/.../castle-tou… Step into history—we can’t wait to welcome you! #BirrCastleDemesne #CastleTours #ExploreHistory #VisitOffaly

Beautiful early Summer vibes at Birr Castle Demesne GardensofIreland

After launching the expanded #GrasslandsTrail (27 sites across Ireland!), we're happy to say that there will be events at some during the year 🔎☀️☘️🚶🏾‍♀️🤓🧐 Details below, & watch this space for further info & events... #GreatIrishGrasslands Download: greatirishgrasslands.ie

🌿 Summer’s here — let the adventure begin! 🌿 From today, Friday 30th May, we’re open daily 09:00–18:00. Come explore the demesne and discover the magic it holds, rain or shine! ✨ #BirrCastleDemesne #IHH #VisitOffaly

Teagasc, in collaboration with The Heritage Council will hold an Extensive Grassland Biodiversity Event on Thursday 12 June from 10am - 5pm in County Arms Hotel and Birr Castle Demesne, Co. Offaly. Pre-booking is essential, so register on teagasc.ie/biodiversityev… Teagasc Environment

From vibrant reds to soothing purples, our greenhouse in the formal gardens is a blooming paradise🌻🌹🌸 📷: Paul Moore Photography #greenhouse #summerblooms #formalgardens

📣 Join us July 5 at 14:00 for a Walk & Talk with historian Brian Kennedy! 👣🏰 Explore Birr Castle Demesne and hear captivating stories of the Parsons family, full of history & charm. 🌿✨ Don't miss it! #BirrCastleDemesne #WalkAndTalk Book Now: ecom.roller.app/birrcastledeme…

With Tourism Ireland’s #IrelandUnrushed campaign, discover Birr Castle Demesne: 120 acres of trees, wildflowers, gardens, and heritage. See the Great Telescope, stroll the meadows, and slow down. 🌿Take your time. Take it all in. #SlowTravel #BirrCastleDemesne

Lost in the beauty of our wildflower meadow🌼🌾💛 📸: TinaClaffeyPhoto #visitoffaly #visitbirr #irelandshiddenheartlands #meadow #keepdiscovering

#YourCouncil is delighted to announce the official launch of new tourism brochure kiosks located in Dooly’s Hotel, County Arms, Birr Castle Demesne, and Birr MD offices. #DiscoverMore about the beautiful tourism town of Birr and the wider region.

Wonderful day at Birr Castle Demesne. Highly recommended.

The scientific highlight at Birr is the Great Telescope 1845- the largest telescope in Europe for 70 years and where the 3rd Earl of Rosse (Lord of Birr) first decided a 'fuzzy star' was actually a nebula. Can you imagine 🤯. I mean, people had been excommunicated for less.