While on the island, make sure to check out things like the Heritage Centre, the Fort of Aongus, The Worm Hole, which is a completely natural rectangular shaped pool on the southern coast of the island (pictured), and the many beaches. Just be warned: even on a really hot day, the water is probably going to be freezing! Oh, and if you want to swim in The Worm Hole, make sure the water is calm and you have a friend with you (it's really hard to get out of the hole!).