In short: spent a weekend in Limerick in Ireland. Despite the city feeling rather small at first, there was quite a lot to see and to do (and would have been even more, had we booked in advance).

Bunratty Castle - check out the evening entertainment link. They host medieval banquets there.
King John's Castle. Yes, and in case you're wondering: King John was the baddie in Robin Hood's saga as well as the brother of Richard the Lionheart - he also signed the Magna Carta.
The book and film Angela's Ashes has its roots in Limerick. There are city walks around this theme, and local people seem to have strong feelings about it.
Tourist information of the area.

Wool Works' list of yarn shops (might be outdated)
I visited Lena's Sewing and Knitting Centre (27 William Street) and was more than happy with their selection as well as service. Then there's Hickey's on Cruise's Street (sorry, don't have the exact street number but the dancing lady statue is right next to it). They sell all sorts of textiles, plus some beads, feathers, handbag handles and such, and the yarn selection is rather limited. But had I not read about Lena's shop, I would have been happy to find even those.

We also visited Adare, which is said to be the prettiest village of Ireland. I don't know about that, but they had some local yarn on the shelves of Adare heritage centre. Hihi, thus worth a visit.