Things to consider when observing the sky in European cities
Stars and celestial bodies can be photographed either from your window or from a location outside. The main reason for choosing outside locations is the better visibility of the sky.
If you choose to go outside there are a few things you should keep in mind.
Public nuisance: the use of astronomic equipment in public places may require the authorization of the local authorities. Though its use may disturb others and can lead to your arrest.
Wildlife: if you intend to leave the urban area at night you should try to avoid endangered animals like bears and wolfs, because encounters may cause injury or death. According to internet sources wolfs prefer to travel on streets while bears travel on mountains and fields. Both cut off the way of their prey when it tries to get to the waterhole.