Climbing on that ship's mast wasn't easy and I was quite scared :D But the reward was a hell of a view on the top!
Iceland has sooo much to offer if... your wallet is pretty thick. It's much easier and cheaper to sight-see when you actually live here as I am since March. Anyway, If you'll be around by May, let me know, so I can advise you a little bit and mayme show you around Reykjavik!