For this discussion is means that in London the indoor climate is livable, but terrible for trying clothes, while in Norway the indoor climate is nice and drying clothes indoors is helpful for adding humidity.
Maybe you are thinking about district heating? There are a few places in the world where the heat for an entire town comes from the same plant and is piped around. This is also called central heating which makes it confusing, thought district heating is the more correct term from what I can tell. I'm talking about a single heating system that handles the whole house, not a system that handles the whole town.
I personally have a small attic apartment in Trondheim (Norway). It has bathroom floor heat and came with one wall panel: I actually just use one oil-filled electric radiator and keep a fairly cool bedroom. Wood heating is pretty common too - one of the scents of fall is the lighting of fireplaces.
That said, more central heating is starting to become popular in the form of heat pumps, but I honestly only know one person that has one - and they are on a farm in the countryside instead of here in the city.