Deleted member 108228
This was OTL. Himmer's organisation Ahnenerbe ("Ancestor-inheritance") served to investigate the Germanic past (although, predictably, also delving into Grail mythology and such stuff). Himmer was very keen on reconstructing actual Germanic town-halls and such things, and Hitler was really not into it. He preferred Speer's neoclassical designs as representing the "Aryan spirit" (designs which Himmler, correctly, saw as totally unconnected to the actual Germanic past). Hitler mostly just let Himmler muck about freely, in part because Ahnenerbe was conveniently self-financing. (This was really ingenious: Himmler managed that by basically stealing the patent for those reflector thingies you put on bicycle paddles... and then pushing the government to make them mandatory, so that Ahnenerbe, as the patent holder, made a killing in royalties. And yes, that is also OTL.)
Those interested in the matter can read about all of this in the book I got this from: The Master Plan: Himmler's Scholars and the Holocaust, by Heather Pringle. It details how Himmler was both the Nazi most interested in real history and the Nazi most interested in the kind of bullshit you see on Ancient Aliens. Also... how he had really insane plans for the future of the Aryan Empire (including neo-feudalism with the SS elite as the new aristocrats, and an artificial return to pseudo-medieval conditions.)
That sounds insane, his plans.