If you visit the Dingle Peninsula you must visit the Gallarus Oratory. It’s an early Christian church, possibly built in the 6th century. There is a visitor centre but don’t be fooled into paying the entrance fee. The building is a national monument and the public have a right to see it. Your entrance fee does pay for a crummy video in a dark and musty room but to be honest it’s not worth it! Continue up the road and you’ll find a path leading directly to the church.
Your taxes pay for the upkeep of the building so why pay another charge to see it?