As for what the 'Nazi' style comprises, German architects of the 1930s developed a format for designing government facilities, and their style can be summed up in a few words: imposing concrete excess combined with relatively low, long lines.  Instead of believing in towering skyscrapers as much as was possible with the technology of the 1930s and later, Nazi architects believed that the more physical space occupied along the streets with efficient and cold precision, the more respect one could theoretically generate among the common masses.  Although corruption ran rampant in the interiors of the Nazi offices, the exteriors presented a stern denial of anything but a modern government.  It was a style which pervaded American architecture, at least slightly, after the end of the W.W.II.  This infiltration was, in my humble opinion, only possible when one explores the mysterious history of our Nation's importation of the German intelligentsia after the fall of Germany in the mid forties.  In my opinion, it was the perhaps best course of action available under the circumstances at the time.  Ignoring the ranks of Nazi - affiliated or funded researchers would have only given an easy source of brainpower for those whom dreamed of trying o resurrect the Third Reich in first few years after the close of open conflict in Europe.