A couple more photos which I thought you might find of interest.

These are the two Flak Towers in Hamburg, surveyed by No. 6 Flak Disarmament Troop, Royal Artillery in 1946.

The top photo shows Flakturm IV in Heiligengeistfeld and the lower is Flakturm V in Wilhelmsburg.

The Flak Towers are in the background, the nearer buildings being the Fire Control Towers housing the radar etc.

The Towers had a mixture of 128 mm, 37 mm and 20 mm guns, plus Air Raid Shelter space for up to 10,000.

Both F.C. Towers were demolished after the war but both Flak Towers remain, the one in Heiligengeistfeld becoming a night club and music school in recent years, while the one in Wilhemlsburg is derelict. The extent of bomb damage around them is obvious.

The photos are part of a collection I bought a few years ago showing these towers in detail.

There’s a good Wiki article about Germany’s Flak Towers with photos and links to Google Maps etc, here:

http://en.wikipedia.org/wiki/Flak_tower#Flakturm_IV_-_Heiligengeistfeld.2C_Hamburg