The largest unoccupied jail in the country, Kilmainham Gaol is a remarkable visitor experience. In operation from 1796 until 1924, it is where many political and military leaders of many rebellions, including the 1916 Rising, were held and, in many cases, executed. It is an integral and important part of national history and at just €6 for adults and €2 for students for entry, a guided tour and exhibition, it is a fantastic way to explore some of the most dramatic and influential themes of modern Irish history.