Athlone Castle, Medieval castle in Athlone, Ireland

Athlone Castle is a stone fortification with a tall wall of grey, irregularly coursed blocks and a rounded bastion on the right, faced with larger, darker grey rectangular blocks and a row of projecting square supports along its upper edge. A flagpole with a red flag stands on top of the bastion. The central keep, a polygonal tower built on a motte, survives within the curtain wall and drum towers.

A wooden structure from 1129 was replaced by a stone castle built in 1210 on orders from King John to control the region. The stronghold went on to play a major role in regional defense and administration for centuries.

The castle displays how Athlone developed over many centuries through artifacts and illustrations. Visitors can see how the town and the stronghold shaped each other throughout different periods.

The castle stands on the west bank of the Shannon in the town centre, with the visitor centre entered from the town side. The keep is a National Monument and the exhibition spaces are spread over several floors reached by stairs. The 1810 barrack building overlooking Main Street forms part of the complex.

A 360-degree audiovisual presentation inside the castle lets visitors experience the intense 1691 siege firsthand. This immersive show places visitors directly into the events and shows the dramatic consequences of that military conflict.