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Birr scenic view

Discover Birr

The Georgian town that built a telescope

Parsonstown and the Leviathan

Birr, Biorra in Irish, grew up around the monastery St Brendan of Birr founded here in the sixth century, and the town's oldest claim to fame predates the Georgian streets by a thousand years: the Synod of Birr in 697 AD enacted the Cain Adomnain, the law protecting non-combatants that is often called Ireland's first human rights charter. Around 800 AD the scribe MacRegol produced a decorated copy of the four Gospels here; the original is in the Bodleian Library in Oxford and a facsimile sits in Birr Library.

The Parsons family arrived in 1620 and the town was called Parsonstown until 1899. They built the malls, the avenues and the perimeter of Georgian houses that survive almost intact, and inside the demesne wall they built telescopes. The Third Earl's six-foot reflector of 1845 pulled visitors from across Europe; his son measured the heat of the Moon; his youngest son Charles invented the compound steam turbine in 1884, the one that took his name to sea in Turbinia ten years later. Science is still the town's business: I-LOFAR receives radio signals from the same parkland today.

Birr Castle Demesne and the Great Telescope, Co. Offaly

What's On

Upcoming events and things happening in Birr

The Birr Castle Christmas Express

Recurring

A festive train through the demesne and into the castle to meet Santa and Mrs Claus, late November into December.

SeasonalAnnually from late November through December on selected dates. Dates here are the 2026 season as published by the operator; confirm the next at birrcastle.com.Birr Castle Demesne, Rosse Row, Birr

Christmas Wreath Workshop at Birr Castle Demesne

Recurring

Making a Christmas wreath from the castle gardens' own foliage, with floral designer Richard Haslam, over one weekend in late November.

SeasonalAnnually over a weekend in late November. Dates here are the 2026 season as published by the operator; confirm the next at birrcastle.com.Birr Castle Demesne, Rosse Row, Birr

Birr Festival of Music

Recurring

Classical music across Birr's historic venues on the May bank holiday weekend, founded 2016.

MusicAnnually over the May bank holiday weekend. Dates here are the 2026 edition as published by the organiser; confirm the next edition at birrfestivalofmusic.com.Birr Theatre and Arts Centre and other venues across the town

Birr Vintage Week and Arts Festival

Recurring

Nine days of arts, street theatre, parades and pub events across the town, running since 1968.

FestivalAnnually, nine days from the end of July into the first week of August. Dates recorded here are the 2026 edition as published by the organiser; confirm the next edition at birrvintageweek.com.Venues across Birr town centre
Live

Birr Right Now

Birr is inland and sheltered, so it escapes the Atlantic wind that hammers the west coast, but it pays for that with colder clear nights and river fog in autumn. Bring a rain layer and something warm for the evening: most of what you came for, the demesne walks, the malls and the trail, is outdoors, and the castle is not somewhere you can duck into. The seven galleries of the science centre are the indoor fallback.