Castle Ewen is not really a castle, but a cool natural rock formation that looks like a medieval fortress perched on top of a hill in the Fairy Glen. It's a bit of a scramble to get to the top for some awesome views, but totally worth it. Just watch your step because it can be steep up there! And hey, don't forget to check out the spiral carved into the grass at the foot of the "castle" – but remember, it wasn't the fairies who did it, just some visitors getting creative.