Dunboy Castle

Dunboy Castle is a ruined 15th-century fortress on the Beara Peninsula near Castletownbere in southwest Cork, originally built by the O'Sullivan Bere clan to guard Berehaven harbour and control the lucrative sea fisheries. The castle gained historical prominence during the Siege of Dunboy in 1602, when English forces under Sir George Carew bombarded it for ten days, destroying the stronghold and marking the end of the O'Sullivan Bere's power. Though reduced to ruins, the castle remains accessible to visitors as an important monument to Gaelic resistance during the Nine Years' War.