Dublin is a very cosmopolite city. You don’t have to take my word for it. Just ride the 46A bus into town on a Saturday morning…
Choose the middle back seat on the lower floor of the double decker, sit back and listen.
Chances are that a scenario very similar to the following will occur: On your right, two chinese girls are chirping away. On your left, a Polish guy is talking on the phone to his girlfriend. A couple of blonde German backpackers is checking a map two seats in front. A brazilian guy on the left seat facing backwards just answered his phone, and is talking to what sounds like his manager with a very strong accent. An Irish teenager stops a second from listening to her iPod, and her eyes grow bigger at the multitude of different languages spoken around her. As the bus reaches your stop, you head for the exit, passing by a family of Indians. Oh, and you are Romanian 
The 46A is the busiest bus route in Dublin, or Ireland for that matter, according to Wikipedia. It crosses the entire southside of the Dublin Area, starting in Dun Laoghaire, and ending in the City Centre, just a bit on the Northside, in Mountjoy Square. Being such a long and busy route, it’s no surprise that it provides for such a fine example of Dublin’s multiculturality.
That is not to say that the 46A always has this kind of people distribution. It would be probably interesting to conduct a full research on this - and I think the bus drivers would have a lot to tell. However, based on my personal observations alone, there are certain times of certain days, when the population on the bus has a high proportion of foreigners, be it immigrants or tourists. And it’s not the same as in the case of London, Paris or New York, as these are really huge cities, which traditionally have had a lot of foreigners. Dublin is relatively small for a capital, and it therefore feels more cosy, in a way like a big village - where everybody knows everybody 
I like Dublin, and I like the Dublin bus (probably also because I don’t neet to travel that much on it 
) And being a foreigner myself, I can say I understand why Dublin was voted friendliest European city in 2007.
