If you Google "Plac Wolności Czarnków" and look at images, you'll see it's a fountain in the square. :)

I have no idea what these lights are suppose to be but they weren't here before so I'm assuming they're seasonal lights.

NQ.... I think you did very well to discover so many trees and lights.... you missed hardly any.

Here's another one that has seasonal lights that I have not seen before.