When it was first built in the late 1780s it was called the "New Jail" to distinguish it from the old jail it was intended to replace - a noisome dungeon just a few hundred metres from the present site. Over the 140 years it served as a prison it held in its cells many of the most famous people inoved in the campaign for Irish independence. The leaders of the Easter Rising, 1916 were held and executed here. The last prisoner held in Kilmainham was Eamon de Valera. It was abandoned as a jail in 1924 and following lengthy restoration it is now a museum of prison life.