St. Patrick's Cathedral

Tuesday was my day to tour Dublin. I walked around the city most of the day and saw many of the sights. This is St. Patrick's Cathedral behind me. Nothing really super exciting in the city of Dublin.
There is a distinct lack of street signs though. The street signs are usually mounted on buildings. For a two street intersection where it would be helpful to have eight signs in total, so no matter which corner you looked at you could figure out where you were, often there would be between zero and two signs. This resulted in quite a bit of getting lost and walking several blocks down some street not knowing what it was. I was later informed that the Irish don't use street names for directions, instead they use pubs since they are so common. They say "go a few blocks and turn right at the pub with the yellow door." I had difficulty dealing with this concept.
Another thing that I found odd occurred when I went to buy lunch in a supermarket. I bought some pasta, a sandwich and a drink. After paying I asked for a plastic bag and was informed that a bag costs 15c. At the time I thought this was outrageous. I hoped they were doing this for environmental reasons. (After researching this on the Internet, Ireland instituted the plastic bag tax in 2002 and it led to a 90% reduction in plastic bag use. Not a bad idea at all).