In this episode of Talking History, Dr Patrick Geoghegan explores the history of Dublin Castle over the centuries, featuring a number of authors and editors of the new book “Dublin Castle: From Fortress to Palace” - Professor Seán Duffy, Professor of Medieval Irish and Insular History at Trinity College Dublin; John Montague, Associate Professor in the College of Architecture, Art and Design in the American University of Sharjah, UAE; and Con Manning, former Senior Archaeologist with the National Monuments Service, who directed excavations at Dublin Castle.