Fodor's Expert Review King John's Castle

First built by the Normans in the early 1200s, King John's Castle still bears traces on its north side of a 1691 bombardment. If you climb the drum towers (the oldest section), you'll have a spectacular view of the city and the Shannon. Inside, an audiovisual show illustrates the history of Limerick and Ireland; an archaeology center has three excavated, pre-Norman houses to explore; and interactive exhibitions include scale models of Limerick from its founding in AD 922.