1930 - 1936 working and living together with the architect Herbert Eichholzer.
From 1937 working with Clemens Holzmeister, cooperation for the contest Parliament in Ankara and Festspielhaus in Salzburg.
1938 arrested by the Gestapo.
1939 - 41 back in Bulgaria working at the office for waterways in Sofia.
1942 marriage with Architect Richard Praun, Vienna
1947 restoration of the bombed Schloss Belvedere
Since 1952 independent studio, houses, stores, furniture, lamps, ceramics with Gudrun Baudisch
1953 - 59 working at Josef Frank`s interior gallery "Haus und Garten"
1981 award for applied arts City of Vienna.
1986 exhibition at Gallery Würthle, Vienna
1997 exhibition Museum of applied arts Vienna
Anna-Lülja Praun was as a person of integration a very important character in the scene of architecture in Vienna.
Important works for private celebrities, Herbert von Karajan, György Ligeti, House Sailer in Salzburg, apartment and boat Wolfgang Denzel.