This island stands at the entrance to Clew Bay and is famous for being used by pirates as a den. Grace O'Malley, who made it her headquarters in the 16C, is said to be buried in the ruins of the Cistercian abbey, near the beach. Inside, you can make out traces of frescoes on the ceiling - very rare in Ireland. The lovely Clare Island is guarded by impressive 90m-high cliffs, dominated by Knockmore (461m). Pretty panorama from the lighthouse.
Address:Clare Island Ferries - Roonargh Pier Roonagh-Quay
[May-Sep: 5-6 boats a day; rest of year: operates weather permitting Fri and weekends, telephone for timetable - round trip possible in one day -free bikes - bus shuttle from Westport]