From an earlier answer of mine

Part I

One of the advertisements for the Kraft durch Freude (Strength through Joy/KdF)'s encapsulates a number of the aspirations of the National Socialist state had for its future. In the color advertisement for one of the flagship Volksprodukte of the regime, a proud father shows off his new black KdF-Wagen to his young son. The son, carrying a toy cannon, seems amazed at this symbol of the new-found prosperity that Germany had achieved under Hitler; the black car complements the family's quaint middle class home with its verdant garden of sunflowers. This advertisement, as well as others for the the KdF-Wagen ( 1, 2, 3 ) was emblematic of the Third Reich's ambitious and, often quite contradictory, vision of the future. The National Socialist state promised Germans a comfortable middle-class existence complete with all the benefits of technological modernity as their natural birthright as Aryans. Additionally, the Third Reich also promised that such efforts to enrich the lives of Germans would be achieved with relatively little effort and would not come at the expense of traditional German values.

Although there were often competing visions of the future within the polycratic Third Reich, such dreams often picked up preexisting mores and concepts and applied a deep National Socialist gloss to them. For example, one of the cornerstones of propaganda and discourse of the Third Reich was the concept of the Volksgemeinschaft (People's Community), in which such niggling divisive markers like class or religion would become irrelevant and instead be replaced a solidarity based on shared ethnicity. Although the Volksgemeinschaft concept has become indeliably associated with the Third Reich, for just cause, but the concept actually dated back to the Kaiserreich and gained added currency with the myth of the Burgfrieden of 1914 when German political parties united with the onset of war. The Weimar (BTW does it bother anyone else that Reddit's spellcheck suggests "Wiemar" for Weimar?) SPD politician Friedrich Ebert frequently peppered his speeches with references to the Volksgemeinschaft and the term found use both in Weimar Germany's left, but also its right. The Third Reich monopolized the Volksgemeinschaft concept and it filtered through in various propaganda and cultural policies. Beyond orchestral music, the state also sponsored considerable attention to Hausmusik (home chamber music) and German folk music. There was a strong attention paid to folk music revival in this period and National Socialist festivals and organizations often featured singing traditional folk songs, modified front songs of the First World War like Wacht am Rhein, or new compositions. The importance the state placed in German song was not accidental, but rather a deliberate attempt to cultivate a Volksgemeinschaft through culture. The folk music repertoires favored by the state were often martial in nature or otherwise celebrated the Germanic spirit. The idea of collective singing helped buttress the collective spirit of the German people and lyrics stressed both loyalty and willingness to sacrifice on the part of the Volk. Not surprisingly, the repertoire and programs sought to divorce German music from their religious or other problematic origins and from the mid-1930s onward, the state often promoted its own secular musical festivals around Christian holidays to further disassociate German music from any of its Christian roots. These tendencies of using music as an instrument of state policy grew with the war. The musical pause between radio news bulletins featured Mozart's "Üb’ immer Treu und Redlichkeit" (Always practice loyalty and honesty) and the state celebration of the German canon likewise increased. One feature of wartime propaganda films was that their protagonists frequently burst into song, such as this scene in Stukas, or feature German music at their denouement like Kolberg and Der Große König. edit: links are dead, but the films are relatively easy to find online)

Concepts like the Aryanized Volksgemeinschaft soon filtered into National Socialist urban planning which also incorporated many preexisting German and European concepts in its planning for a new German lived space. The English concept of the Garden City, which sought to check rampant urban growth by girdling suburbs with vast green areas, achieved a new currency within the Third Reich as exemplified by Gottfried Feder's treatise Die Neue Stadt (the New City). Worker housing for strategic industries often incorporated the Garden concept in miniature. The Ganghofersiedlung (formerly Hermann Göring Heim ) in Regensburg was constructed in 1936 with strong attention for a garden strip and modern amenities for the workers at the Messerschmitt plant. The state also went to great pains to highlight the various worker amenities provided through the Deutsche Arbeitsfront (German Labor Front/DAF) such as recreational swimming pools, improved health care, and other forms of state-subsidized leisure. The state also co-opted various cultural conservative for historical preservation and Heimat-schutz. There were various local and national initiatives to beautify the German lived space and return it to its allegedly natural roots. In some cases, this Heimat-schutz meant exposing the beams of house edifices' and otherwise preserving the seemingly picturesque quality of German towns (whether or not this was grounded in a locality's actual architectural history was often irrelevant). There were also campaign against "national kitsch" that would soil this Germanic heritage with too much crass commercialization of scenic areas. The Third Reich also drafted up several environmental laws, for example, the the Reichsnaturschutzgesetz (Reich Nature Protection Law/RNG) was a 1935 law which stipulated that any public works project needed to consult local conservationists first.

As with Volksgemeinschaft, these visions of German lived space often had a strong racial component to them, treating the lived area as biological organism that needed a proper balance. Urban planners who favored Garden Cities also had to contend with competing visions of German lived space, such as Speer's "ruin theory" which favored gargantuan architectural monuments to the state such the the Nuremberg Sportpalast, often made of ferro-concrete or other durable materials that could survive a millennia (hence the name ruin theory- to have value, a structure had to be able to last a thousand years). These urban plans often ran afoul of reality; the expansion of Messerschmitt's plants meant that Hermann Göring Heim's houses soon filled up and Regensburg suffered an acute housing shortage throughout the late thirties and the war.

The SS-led Generalplan Ost (General Plan East) was one of the more coherent and expansive visions of the future world the Third Reich was trying to create for its Aryan citizens. As the SS assumed control over the settlement of Polish and Soviet territories and their Germanization, Generalplan Ost drafted landscape architects, urban planners, and other various academics to craft a National Socialist utopia out of this space. Although this new order was predicated upon encouraging the settlement of a new peasant class in this space, the Generalplan Ost planners often viewed this eastern space as a part of holistic modernity. Plans for peasantry's new farmhouses often featured spacious modern interiors and the buildings were to be made of durable local materials. The SS also sponsored various open competitions for town renewal in which architects would tender designs for new town centers that fit within the aesthetic principles established by the Generalplan Ost. Outside of rural areas and small towns, the SS also envisioned a radically different vision of the urban metropolis in the East, Erhard Mäding, a consultant to Reichskommissar für die Festigung Deutschen Volkstums (Reich Commissariat for the Consolidation of German Nationhood/RKfDV) and a Major in the SS articulated the SS's plan for these cities in a 1942 Deutshce Arbeit article. These metropolises would then emerge as triumphant example of the Germanic race by emulating the architectural principles smaller neighbors. "For these cities," he wrote, "urban design guidelines have been developed for the purpose of securing all of the developmental possibilities for German communal life, love of Heimat, and cultural spirit." These cities would act as administrative nodal points for the new Eastern Gaue, but the local villages' and hamlets' DAF and SS facilities would act as a check upon destructive urban growth. These new cities would incorporate elements of the Garden City, and Mäding assured his readers that this would lead to a Grünaufbau (greening) of urban space. This coordination of urban construction with nature via a campaign of directed landscaping would transform the Eastern steppes into a distinctly German cultural landscape.