Among your first stops should be Michael Cusack Centre. Here, you'll be able to find your bearings and get some great ideas before you set out exploring.
You'll have no end of sightseeing choices when visiting Meggagh. Michael Cusack Centre is an ideal place to kick off here, but there are many other fine attractions to enjoy. Aillwee Cave, Burren National Park, and Poulnabrone Dolmen are near the tourist information center and and will cap off your day nicely.