Temple Bar is the reason people from all over the world visit Dublin.
Besides the innumerable pubs, bars and clubs, Temple Bar is simply gorgeous. Check my pictures and you will see what I mean :).
Here's a typical corner in the Old Town (aka Temple Bar). Watch the gorgeous wall colors:
In this picture you can actually see the canal at the far end of the cobblestone street:
I just love it how almost all Temple Bar streets end at the face of beautiful old buildings: