I went to Ireland a few years ago and did walk down where Windmill Lane Studios was, however it was a little disappointing as there wasn't much there except for a plaque and all of the vandalizing, and like everyone has listed, I hear the area has been torn down since I've been there. One place I did find myself and I was quite thrilled to find was the castle used on the cover of "The Unforgettable Fire." It's called Moydrum Castle, and it's sorta hard to find, plus it's technically private property so all you can pretty much do is take pictures of it. Doesn't quite look the same as the vegetation has complete taken over the castle. It's in the middle of Ireland near Athlone. I tried to visit Slane Castle, however it was closed that day, so I pretty much just took a picture of the entrance.