Enniskillen Castle in co. Fermanagh is situated at a strategic location on Lough Erne on a site that commands one of the few passes into Ulster. It was built in the late 1400s by Hugh ‘The Hospitable’ Maguire. The Maguires were a ruling Gaelic family who over a period of 600 years were in constant warfare around this area with the O’Donnells, the O’Neills, and the English. The building has continuously morphed over the years as each successive ruler added and changed different parts of the castle. The circular tourelles date from 1609 and have a Scottish influence, the Watergate Tower was added in the 1700s and British army barracks were built in the early 1800s. It is now a State Care Historic Monument and houses the Fermanagh County Museum. The name Enniskillen (Inis-Ceithleann) means the Island of Kathleen, a mythical queen of ancient lore who was reputedly drowned here.