http://gplanost.x-berg.de/generalplaneast.html
https://www.dfg.de/pub/generalplan/planung_1.html (in german).
In one of the episode of the show “Auschwitz the nazi and the final solution”(wich I reccomand to watch) ,they showed what the nazi wanted to do with the camp if they won the war (the city would basically become a german settlement and their would be a IG farben factory+himmler would got some appartment)