02 July 2020, Berlin: Numerous boats, including many houseboats, can be seen from the roof of the Treptower in the Rummelsburger Bucht, which is a thorn in the district's side. Signs will be put up in the Rummelsburger Bucht in the coming week to enforce a mooring and berthing ban on the Lichtenberg side of the lake. Photo: Paul Zinken/dpa/ZB