Built in December 1938 by one hundred inmates transferred from Sachsenhausen concentration camp, Neuengamme concentration camp was established around an empty brickworks in Hamburg-Neuengamme. The bricks produced there were to be used for the "Fuehrer buildings", part of the National Socialists' redevelopment plans for the river Elbe in Hamburg.
http://www.jewishgen.org/ForgottenCamps/Camps/NeuengammeEng.htmlhttps://en.wikipedia.org/wiki/Neuengamme_concentration_camp