What is Marzahn?
[[Image:Berlin Marzahn-Hellersdorf Marzahn.png|thumb|Location of Marzahn in the Marzahn-Hellersdorf borough of Berlin]] '''Marzahn''' is a [[wikt:locality|locality]] within the [[Boroughs of Berlin|borough]] [[Marzahn-Hellersdorf]] of [[Berlin]]. [[Image:Alleekosmonauten.jpg|thumb|left|Marzahn today: ''Allee der Kosmonauten'']] Marzahn became part of [[Greater Berlin Act|Greater Berlin]] in 1920, as a part of the [[Lichtenberg]] district. In 1979, the large [[housing estate]] of Marzahn was separated from Lichtenberg to become an [[East Berlin]] borough in its own right and in 1986 the new [[Hellersdorf]] district (including [[Berlin-Kaulsdorf|Kaulsdorf]] and [[Mahlsdorf]]) was split from it. [[Berlin's 2001 administrative reform]] led to the former boroughs of Marzahn and Hellersdorf fusing into a single new borough. In the north the locality includes the neighbourhoods of ''Bürknersfelde'' and ''Ahrensfelde'', an overbuilt strip of land which once belonged to the [[Brandenburg]] municipality of [[Ahrensfelde]] and was incorporated into Berlin in 1990. The historic village of Marzahn was first mentioned as ''Morczane'' in a 1300 deed by Margrave [[List of rulers of Brandenburg|Albert III of Brandenburg-Salzwedel]], when he granted the estates to the Friedland [[Cistercians|Cistercian]] abbey (in today's [[Neuhardenberg]]). After the [[Thirty Years' War]] it fell to [[Frederick William, Elector of Brandenburg|Elector Frederick William of Brandenburg]]. Marzahn was the site of a labour camp (today a [[sewage treatment|water treatment plant]]), where [[Roma people|Roma]] were interned from July 16, 1936 on, two weeks prior to the [[1936 Summer Olympics]] in Berlin, away from visitor's eyes. As a part of the Nazi ''[[Porajmos]]'' extermination policy, up to 2000 inmates remained there until in 1943 they were deported to [[Auschwitz concentration camp|Auschwitz-Birkenau]], where most of them were gassed. In 1941 the large factory of the ''Carl Hasse & Wrede'' machine tool company (now [[Knorr-Bremse]]) was erect