I'm in London, UK.
Now, for a globetrotter like me (having visited 14 countries. Including Norway), I am of course very familiar with the most important European cities. And if I'm in doubt, my tickets (if I kept them, which I usually do - my pockets are filled with … things), will usually tell me where I am. Usually. If everything else fails, here are a few signs that may tell you where you are, or at the very least where you're not. All based on traversing Oxford Street on foot yesterday.
1. People.
There are lots of people abroad. Back in good ol' Norway we're around 12 humans per square kilometer. London is noticeably more crowded. Which can cause problems. Because: When walking around, my movements tends to be a bit … erratic, some may even say brownian (nothing to do with alchohole, I almost never touch it). Further, my mind and especially my eyes tend to be focused on shop windows, entertainers, other stuff, but not on my immeidate surroundings. Fortunately said surroundings seems to be well aware of said surroundings, but when they're not … let me put it this way: I fully understand why light takes 100,000+ years from the core of the sun to the surface.
2. Traffic.
Cars come from where they're not supposed to. I've said it before: getting a driver's licence in the uk must be very easy, since they let you get away with driving on the wrong side of the road. This is clearly an example of left being wrong, and right being right. Unlike politics. Back home, as a pedestrian I tend to regard traffic lights as suggestions, a sort of guidance, not to be taken literally. I cross the street whenever there are no cars around (only if I intended to cross in the first place, stupid). Can't do that here, because even if I see no cars, there may still be one or two of them on a potential collison course. So I choose to wait for the little green men. I could of course follow the natives, but in general, being the second one trying to run towards the other side is not recommended. So, yes, I do wait for the little green men.
BTW, I saw three bicyclists stopping for red lights. And I even encountered a bicyclist stopping for me at whatcha-call-it-thoee-zebra-stripes-in-the-streets. Uncanny? Makes me shiver.
3. Escalators.
People know how to behave in escalators (admittedly I haven't been near one late at night when people are drunk). Stand to the right, and if hasty, walk/run on the leftish part. If you don't get it right (you're a tourist), a gentle kick in your but will soon enlighten you. Back home? *laughs*.
4, Language.
If people in general refuse to speak Norwegian, your'e not in Norway. Simple as that.
5. Other things.
pibbur who when in Rome does as Norwegians do.