"Built in the 13th century, this fortress is one of Ireland’s largest and best-preserved fortifications, set on a rocky island in the River Suir in County Tipperary. Much of the original structure remains even though it has been rebuilt and expanded over the years; today guided tours, a bookshop, and an audio-visual presentation "tell its dramatic story." The fortress has also been featured on screen in the movie "Excalibur" and the popular TV series The Tudors." - Patricia Doherty Patricia Doherty Patricia Doherty is a writer who specializes in covering destinations, resorts, and cruises for Travel + Leisure and other publications. Travel + Leisure Editorial Guidelines