There is the concept of light pollution, Lichtverschmutzung. If a city is too bright, you won't see the stars, animals would have difficulty to sleep, etc... Th

There is the concept of light pollution, Lichtverschmutzung. If a city is too bright, you won't see the stars, animals would have difficulty to sleep, etc... The city has areas which are lighted, but in other areas it's darker. See the link to the Lichtkonzept I've put in another comment. > public water taps That's an interesting question. A few decades ago this was more common, but it has been removed over the years. I think there is a fear of pollution and also costs involved. There are only a few in the city: https://www.hamburgwasser.de/privatkunden/themen/trinkwassersaeulen/ https://www.hamburgwasser.de/privatkunden/themen/trinkwasser... The Aussenalster is a popular jogging training track and it has public water there. Currently there are plans of the local government to install hundred public water taps in the city in the coming years and two hundred in schools. That's already a movement in various other cities, too: Blue Communities.