I've spent a goodly chunk of my life in Ireland, either enjoying myself privately or leading small-group cultural experiences in the Gaeltachts (Irish-speaking areas).
But one thing I have not done, yet, but always wanted to was spend some time on a narrowboat. Ireland has many canals, and the entire Shannon waterway is riddled with them. You could spend months put-putting over the whole country, stopping at little villages, visiting pubs and doing some shopping and all the while soaking in the country in a manner available no other way. Some people even live on these things full-time.
In a way I have been doing my apprenticeship with my little fiberglass travel trailer that is, in fact, built more like a boat than a traditional trailer.
But the urge is getting stronger. I suspect it may not be denied much longer.
[The picture is not mine. It is from a boat rental site.]