If you've got time you can't beat a boat trip to Fingal's Cave on Staffa. Not man made but surely more inspirational. It makes me feel happy to think about my visit there. Though I wish it'd been longer and there were too many people really. Ideally they should have just left me and come back later. We also went to Lunga to see the puffins. They're not megalithic at all. But who doesn't like puffins, surely no-one.