Cahir Castle

Cahir Castle

A fortress on an island

In the town of Cahir, in County Tipperary, a great grey castle rises from a rocky island in the middle of the river Suir. The rushing water on either side made a natural moat, and Cahir Castle grew into one of the largest and best-preserved castles in all of Ireland. With its towers, courtyards, thick walls and even a working portcullis — the heavy iron gate that drops to block the entrance — it gives a wonderful sense of how a real medieval fortress worked.

A stronghold of the Butlers

The castle's island had been fortified since early times, but the great castle we see today was built mainly in the 1400s and 1500s by a branch of the powerful Butler family, who became the Barons of Cahir. From this stronghold they ruled the surrounding lands, protected by the river and the castle's formidable defences.

Cahir was so strong that it was considered almost impossible to capture — until the age of the cannon arrived.

Battered by cannon

In 1599, during one of Ireland's wars, an English army under the Earl of Essex brought heavy cannon against Cahir Castle. Even the strongest medieval walls could not stand up to such firepower, and after a short bombardment the castle was forced to surrender. The damage from those cannonballs could be seen for a long time afterwards, a reminder of how gunpowder changed warfare forever.

Despite this, the castle survived remarkably well, and unlike many Irish castles it was never reduced to a total ruin.

A castle that survived

Because the Butlers of Cahir held onto the castle for centuries and because it escaped total destruction, Cahir remained largely intact. In the 1800s and 1900s it was repaired and cared for, and today it stands as one of the most complete medieval castles in Ireland, with its great hall, towers and defences all there to explore.

A clever model inside shows how the castle and town looked in the past, helping visitors picture life in the age of the Butlers.

A film and television star

Because Cahir is so complete and so atmospheric, it has become a favourite location for filmmakers needing a convincing medieval castle. It has appeared in historical films and television series, dressed up as castles from many times and places. Its towers and courtyards have thrilled audiences around the world.

Visiting today

Visitors can explore Cahir Castle's courtyards, climb its towers and walk its walls, see the working portcullis and the great hall, and look out over the river Suir rushing past on both sides. The nearby riverside walk to the pretty Swiss Cottage makes a lovely addition to a visit. Large, complete and full of medieval atmosphere, Cahir Castle is one of the finest castles to explore in all of Ireland.