My teenage boys have a day off school in a couple of weeks and I'd like to do something really fun/cool with them. We live just outside London so have done the London Eye, Madame Tussaud's, Orbital, climb the O2 and other main sights in London. Also done Wembley Stadium and The Emirates. Any other suggestions? Their Dad is taking them to Alton Towers in the holidays. I just suggested Bletchley Park and they don't fancy (too educational?), although they are very into history. Really appreciate any suggestions. Thanks