Trim Castle
The largest Anglo-Norman castle in Ireland, a massive stone keep and curtain wall beside the River Boyne in Meath.
Updated 19 October 2026

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Trim Castle covers several acres beside the River Boyne and is the largest Anglo-Norman castle in Ireland. Building began in the 1170s under Hugh de Lacy and continued for decades: a massive cruciform keep at the centre, a long curtain wall with towers and two surviving gates, and a ditch that once held water. The keep is entered only with a guide, on a route of stairs and low doorways that ends on the roof, looking over the town and the river meadows. The rest of the grounds are open to walk at leisure. The castle stood in for the walled city of York in the film Braveheart, which is how many visitors first saw it.
History
Henry II granted Meath to Hugh de Lacy in 1172, and de Lacy first built a large ringwork castle with a double palisade and an outer ditch; over some 30 years he and his son Walter built the stone castle, which covers 30,000 m2 on the south bank of the Boyne (Wikipedia, Trim Castle).
Highlights
- The keep - the cruciform tower at the centre, climbed on the guided tour to a rooftop walk.
- The curtain wall - most of the circuit survives, including the Barbican Gate and the Trim Gate.
- The river frontage - the Boyne runs along the walls, with a footbridge to the far bank.
- The town views - from the roof, Trim's streets, the Yellow Steeple ruin and the water meadows.
When to go
Keep tours run daily in summer and on a reduced schedule in winter, with places limited to small groups, so arrive early or book ahead. The grounds stay open longer than the keep and are pleasant in late light. Weekday mornings are quietest, while school groups fill spring afternoons. Rain makes the spiral stairs slick.
Things to know
The keep can only be seen with a guide and tours sell out on busy days, leaving some visitors with the grounds alone. The stairs are steep, narrow and unlit in places, and there is no lift, so the roof is out of reach for many. Interiors are bare stone with almost no furnishing.
Nearby
The Yellow Steeple, Newtown Abbey and the Hill of Tara are all within a short drive.
Key facts
Source: Wikidata, item Q2165568, read on 18 October 2026.
What to pack for Trim Castle
Chosen from what this place is for. Tap a kit for the full checklist.
- Comfortable walking shoes - Sightseeing means kilometres of pavement and cobbles daily. Find on Amazon
- A slim anti-theft daypack - Zips that close properly; keep it in front in crowds and on transit. Find on Amazon
- A refillable water bottle - Many cities have public fountains; save money and plastic. Find on Amazon
- A light layer + compact umbrella - For museum air-con and a sudden shower. Find on Amazon
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Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.



