The picture shows the standpipe at the sewage farm Großbeeren where there also starts the nature trail "ways of water".
<a href="//commons.wikimedia.org/w/index.php?title=User:Nepi_No._7&amp;action=edit&amp;redlink=1" class="new" title="User:Nepi No. 7 (page does not exist)">Nepi No. 7</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>