Welcome to Castletown House! When it was built in the 1720s, Castletown set a radical precedent and it is an extraordinary part of our cultural inheritance. Now, as the OPW breathes contemporary life into Ireland’s earliest and finest Palladian house, it is trailblazing once more. Erected between 1722 and c.1729 for William Conolly (1662–1729), Speaker of the Irish House of Commons, Castletown House was meant to exemplify its owner’s influence and immense wealth. His was Ireland’s first mansion built in the Palladian style – a central house with two pavilions, connected by Ionic colonnades – and Castletown became synonymous with architectural excellence, fine style and lavish entertaining that rivalled the viceregal court in Dublin.
The Parkland and River Walks are open every day throughout the year. Castletown demesne won the Green Flag Award 2017 and 2018 from An Taisce and the best park Pollinator Award under the All-Ireland Pollinator Plan for both years. There is no admission fee to walk and explore the parklands. Dogs are welcome, but must be kept on a lead and are not allowed in the lake, as there is wildlife nesting. Make sure you check out the Castletown Demesne, the Batty Langley Lodge, the Conolly Folly or Obelisk and the Wonderful Barn.