Here is more about the plans for Germania. After the victory over France in 1950, Hitler issued a decree:
In the shortest possible time Berlin must be redeveloped and acquire the form that is its due through the greatness of our victory as the capital of a powerful new empire. In the completion of what is now the country’s most important architectural task I see the most significant contribution to our final victory. I expect that it will be completed by the year 1950.
Several years later, British and U.S. bombers began their own redevelopment of the Nazi capital.
About all that remains of Germania is the Schwerbelastungskörper, constructed in 1941–1942 by Albert Speer to test the suitability of the marshy Berlin soil to support the planned 100 metre tall triumphal arch. It weighs 12,650 tonnes and sunk 19 cm into the ground in two and half years after its construction. It’s still there today.
As part of Albert Speer’s plan for the reconstruction of Berlin during the Nazi era, Prof. Ernst Sagebiel was ordered to replace the old terminal with a new terminal building in 1934. The airport halls and the adjoining buildings, intended to become the gateway to Europe and a symbol of Hitler’s “world capital” Germania, are still known as one of the largest built entities worldwide, and have been described by British architect Sir Norman Foster as “the mother of all airports”. With its façades of shell limestone, the terminal building, built between 1936 and 1941, forms a 1.2-kilometre-long (0.75 mi) quadrant.
According to the Wikipedia page on Tempelhof Airport, the site was originally designated as an airport in 1923 with the original terminal built in 1927, then:
In anticipation of increasing air traffic, the Nazi government began an enormous reconstruction in the mid-1930s.
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As part of Albert Speer’s plan for the reconstruction of Berlin during the Nazi era, Prof. Ernst Sagebiel was ordered to replace the old terminal with a new terminal building in 1934. The airport halls and the adjoining buildings, intended to become the gateway to Europe and a symbol of Hitler’s “world capital” Germania, are still known as one of the largest built entities worldwide, and have been described by British architect Sir Norman Foster as “the mother of all airports”.
However, this does not appear to be a part of Speer’s formal plans for Germania, which were presented and construction begun four years later, in 1938. Those plans included a new railway station to be constructed adjacent to Tempelhof Airport, which was considered as already in existence.
