His design was announced on 18 December 1970 by the Chancellor of Austria.
Construction began in 1972 under the general direction of the Internationaler Amtssitz und Konferenzzentrum Wien.
www.unvienna.orgSein Entwurf wurde am 18. Dezember 1970 vom österreichischen Bundeskanzler vorgestellt.
Die Bauarbeiten begannen 1972 unter der allgemeinen Leitung des "Internationalen Amtssitzes und Konferenzzentrums Wien".
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