The city centre is small enough to walk around for anyone reasonably fit. The park which has a path that encircles the city with below views of the viaducts makes a great place to take a walk.
Some cars here have a prominently large EU flag on their number plates without a country identifying prefix. I’ve seen this on Luxembourg vehicles in the UK, and only the separate L oval sticker reveals when this car is from. Maybe Luxembourg is the least nationalistic nation in Europe?
My flight to Luxembourg from London Stansted was the cheapest flight I’ve ever bought. It was also one of the worst. Not because Ryanair have many hidden costs on things like many other budget airlines, but that my flight home was canceled because of industrial action with their staff. I had a nice hotel paid for, but I decided not take another flight the next day as I had already missed a day of work and made my own way home (which I took a long bus back to London via the Eurostar) The staff in Luxembourg’s airport were actually really polite and helpful with me and the mostly very angry passengers.
Like a lot of European capitals, the railway station is large and has connections to get all over parts of Europe. I spent one day in Metz, France which was quite a simple journey but required a bus first to Bettembourg, a Luxembourgish town outside the capital city, due to railways works.
Outside of the station was one of these French style urinals, although this one is less crude then some I have seen before.