ALNWICK, England –Participants on the RAF Lakenheath Outdoor Recreation “Harry Potter and Loch Ness” trip visited Alnwick Castle on May 31, 2011. The castle is the second largest inhabited castle in England, and has been the home of the Percys, Earls and Dukes of Northumberland since 1309. (U.S. Air Force photo/Staff Sgt. Stephen Linch)