Berlin 1986: Hamburger Bahnhof was a railway museum set in a disused station building from the early days of the railways. It was administered by the East German railway authority, even though it was in West Berlin, until 1984, when it was handed over to the West. Then started a long period of restoration, and at some point the statue in front of a kneeling male figure disappeared. This was a memorial to those employees of the railways who had fallen in the First World War. I thought it was rather effective, being sorrowful rather than bombastic, but I can find no information about its fate on the internet.
Update: Thanks to http://onnola.tumblr.com/ for the information concerning the sculpture. It was made by sculptor Emil Cauer the Younger and has not been destroyed, but is in storage with the National Gallery in Berlin.