The Confederate Wars of the 1640s were played out in many arenas throughout Ireland, and Athy – for a period of eight years – was one of the centres of war involving the Royalists, Parliamentarians and the Confederates. The town was bombarded by cannon fire many times and the Dominican Monastery, the local castles and the town's bridge (dating from 1417) all succumbed to the destructive forces of the cannonball. The current bridge, the Crom-a-Boo Bridge, was built in 1796.