always located outside of the city for good reason except for the huge concrete towers in Berlin, Wien and Hamburg and those monster twin 128mm's. would not want to feel the effects of the fallout of that debris.
Railroad, 88's, 105's and even single 128's were also out of the reach of city dwellers and were used quite extensively in the Ruhr Gebeit and on the northern coasts. A good friend locally served in the Kreigsmarine 8.8cm batterie out of Kiel and he remembers floating docks out in the bay, the floats with 1-2 guns on them and only kept in check with heavy ropes. He later served on the horrid Ost front, northern section and was captured with several of his men when they were blowing up roads and setting up barriers in Hela in 1945. captured by the Russians, later esecaped to be captured by the French. the guy is a real character. Sadly I have no pics of him