Miltown Malbay, West Clare, has a surfeit of them.
I can remember the first few months we moved here 19 years ago and sat in a not very crowded small bar in town being entertained by the legendary Tommy Peoples every Thursday.
Ennis, twenty miles from here is reputed to be a good location, but, to be honest, when the sessions are as good as they are here, twenty miles seems a long, long way in the middle of Winter.
The Cobblestones, in Dublin is a highly dependable venue, as is The Crane in Galway.
I'm sure there are others far more experienced than me to add to this list
Jim Carroll