Marzahn was the site of a labour camp ( today a water treatment plant ) , where Romani were interned from July 16 , 1936 on , two weeks prior to the 1936 Summer Olympics in Berlin , away from visitor 's eyes .
Marzahn was the site of a labour camp ( today a water treatment plant ) , where Roma were interned from July 16 , 1936 on , two weeks prior to the 1936 Summer Olympics in Berlin , away from visitor 's eyes .