Berlin Kreuzberg infrastructure (#0827)

The neighborhood I stay in when in Berlin consists of very many 5-6 story apartment buildings without much in the way of architecturally interesting design. One thing that does, though, stand out and is visible from many angles is this architecturally interesting red brick chimney. The sign on it says “Canalisation von Berlin, Radial System.” I didn’t feel comfortable going down this driveway to try to discover more, but did find facing another street a building with a sign that seems to explain this. See adjacent picture.