This former military barracks is located along the river Liffy, opposite the Guinness Brewery and a short distance from the Jameson Distillery (I wonder if that was a coincidence?). Built in 1701 by the Surveyor General under Queen Anne, The Barracks became a mainstay of British Forces for several hundred years. It was the oldest continuously occupied barracks in the world. In it's heyday, 1500 troops of infantry and two troops of cavalry were housed here. By the 1800's, the complex became dangerously inadequate when disease began to decimate the soldiers living here. Renovations and enlargements were needed to alleviate these conditions. When Ireland became the Irish Free State in 1922, Britain handed over The Barracks and it was renamed after Michael Collins, the first Commander-in-Chief of Ireland. The 5th Infantry Division marched out of Collin's Barracks for the last time in 1997, when it was decommissioned and turned into the National Museum of Ireland.