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Berthold Konrad Hermann Albert Speer (19 March 1905 in Mannheim, Baden-Württemberg Germany – 1 September 1981 in London, England) was a leading German architect in the Third Reich. Speer was born on 19 March 1905 in Mannheim, Baden, Germany. He was Adolf Hitler's chief architect before he became the minister for munitions and armaments in 1942, replacing Fritz Todt in the Cabinet. After World War II he was convicted of slavery and spent 20 years in prison.