The Office of Public Works (OPW) has confirmed that Trim Castle will be closed to visitors from 1 November to facilitate vital mechanical and electrical works, including extensive re-wiring. The programme is designed to ensure the continued safe operation of the site and to protect the monument over the long term.

The OPW expects the works to be finished by the end of Q1 2027. Trim Castle is slated to feature prominently in Ireland's programme for the 'European Year of the Normans 2027', showcasing the country's rich Norman heritage across towns, castles and monuments. As part of a broader OPW heritage initiative, Trim Castle—one of Ireland's most significant Anglo-Norman sites—will act as a flagship location.

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Minister of State for the Office of Public Works, Kevin 'Boxer' Moran, said: "Trim Castle is one of Ireland's most important medieval monuments and is an outstanding example of the Norman heritage that has shaped so much of our historic landscape. The essential works commencing in November are important to ensure that the Castle continues to be safely operated and conserved for future generations. I look forward to returning in Spring 2027 to reopen the Castle as we celebrate the European year of the Normans 2027.

"I am also pleased to see the Trim Castle Visitor Centre project progressing well, with interpretation consultants now appointed and the project moving towards tender stage. I look forward to great progress at Trim Castle in 2027 on all fronts."

Separately, the OPW confirmed progress on the Trim Castle Visitor Centre, a dedicated visitor experience planned for the historic Market House beside the castle. Interpretation consultants were appointed in September 2026, with prequalification notices to shortlist contractors due shortly. Construction works are currently envisaged to begin in summer 2027.