Galway has a lovely area where you can feed the ducks! I visited there in 1997 and loved the place. It's very walkable. There is a great place to buy tweed there--I bought myself a tweed hat; I still haveit!
Paris is wonderful: try the Louvre, but plan for at least a day or two just for the museum--it is huge. You can't see it all in just one visit--just like the Smithsonian Museums, there is a LOT to see.