Luxembourg is pretty, prosperous, civilised, and look at all the cranes.
Technically in fact, Luxembourg is the richest country in the world. This is in a way misleading: it is possible to find plenty of regions the same size as Luxembourg that are more prosperous, they just aren't countries in their own right. (The really amazing thing is that the United States is nearly as rich as Luxembourg, meaning that the average income of 300 million people in the US is close to that of only the very richest regions of Europe). Still, though, this is a nice distinction to have. And Luxembourg is certainly very rich.
I have read in places that about 30% of the population of Luxembourg are actually Portuguese people here under their EU treaty rights. I haven't seen many (any?) people who are obviously Portuguese today, and I haven't noticed the language. There must be a Portuguese quarter of Luxembourg City somewhere, but I haven't found. it. (I shall Google in the morning). Luxembourg is quite unusual in the French and German seem to have pretty much equal status - try to thing of anywhere else where that is so, other than perhaps Switzerland. French seems to be the more commonly spoken language in the street and in shops and the like though.
However, time for bed. I got up too early this morning, as I had to catch the Eurostar. This is a very comfortable hotel, but alas the internet access is wired rather than wireless, and I cannot take the laptop to bed and remain connected.