Built in the 16th century by the de Burgo family, who later became known as the Burkes, this fortified residence served as both home and stronghold during a period when such defensive structures dotted the Irish landscape. The castle’s strategic position near the river crossing made it a valuable asset for controlling movement between Mayo and Galway, whilst its thick walls and narrow windows speak to the uncertain times in which it was constructed.

The castle’s most dramatic chapter came during the Cromwellian conquest of Ireland in the 1650s, when Parliamentary forces laid siege to the structure. Local tradition holds that the castle’s defenders, facing inevitable defeat, chose to blow up a portion of the building rather than surrender it intact to Cromwell’s army; evidence of this destruction can still be seen in the castle’s partially collapsed eastern wall. Following these events, the castle was abandoned and left to decay, though its robust construction has ensured that much of the original tower house remains standing today.

Now under the care of the Office of Public Works, Shrule Castle has been partially restored and is freely accessible to visitors. The remaining structure rises four storeys high, with a vaulted ground floor that once served as storage, and upper floors that contained the family’s living quarters. Stone stairs built into the thickness of the walls lead visitors up through the tower, whilst the remains of fireplaces, window seats, and a garderobe (medieval toilet) offer glimpses into daily life in a 16th century Irish tower house. From the upper levels, views stretch across the surrounding countryside, a reminder of why this location was chosen for defence and surveillance all those centuries ago.