Kaupunginpuro (Stream of the City) is a little stream in Vanhakaupunki district. The rainbow was spotted at nearby rapids. This stream is a little one, though, and doesn’t form any rapids or floods. I read from a Finnish web page the Kaupunginpuro stream used to be bigger but has diminished since due to construction of roads and sewers. Here is a little pond of the stream with rocks around it that somebody has put there. Little wooden bridge is used by walkers and cyclists. And by cameramen.