Climbing things you shouldn't be climbing is basically half the entertainment at these events, of course this is the best way to go. No windows in the castle, but the stones are rough and have great handholds and foot... footholds? Let's go with footholds. Anyways point is you get to the top just fine. And up on the top you find the parapets. They're great, shapely, a good healthy size, and if you allow yourself a flight of fancy, maybe look a bit hungry? Unfortunately, you can't see your tent in any direction, you must not be quite high enough.