Berlin is the capital of Nazi Germany after having been the capital of the German Reich since its foundation in 1871 and of Brandenburg-Prussia since 1486. Despite of its rapid growth (with about 4.3 million people in 1940, and being area-wise the second-biggest city on Earth after Los Angeles) and importance regarding economy, culture and science - it still seems like a parvenu if compared to cities like London, Moscow and New York City.
The vibrant culture of the "Roaring Twenties" has suffered a lot after evicting, forbidding them to work, and sometimes even killing most of the Jews, leftists, and homosexuals. Still, nearby Babelsberg stays the center of German film production. Since 1926, the city also has a radio tower, the Funkturm, from which in 1932 the first TV broadcast of the world was made. (But that was before Adolf Nazi.)
Science has suffered at least as much, but the city is still an important center, with the Humboldt University.
While the Nazi regime has closed or destroyed most of the many synagogues, and the small Bahai community was forbidden in 1937 by Himmler, it still tolerates the Ahmaddiya mosque, and the Buddhist House (oldest Buddhist temple in Europe, in fact).
The industry of the city hasn't suffered on the other hand, on the contrary: Thanks to rearmament and the war, firms like Siemens, AEG, and Borsig are producing more than ever.
The city is a center of traffic too: Its harbor is the second-most important inland port of Germany after Duisburg at the Rhine, and its airport at Tempelhof the most important one of Europe. The first autobahn (built in 1921 and named AVUS) was built on Berlin's territory as well.
In early June of 1940, British planes bombed the Reich's capital for the first time.
The planned future[]
How the "Führer" wants to make his capital look like after winning the World War
Adolf Nazi however plans on redesigning his capital completely, with his favorite architect Albert Speer (who already built the Neue Reichskanzlei - which barely has been used) making plans for an arch of triumph supposed to be several times bigger than the Arc de Triomphe in Paris, and a domed hall many times bigger than the Capitol in Washington DC or St. Peter's Hall in Rome. However, tests with the Schwerbelastungskörper demonstrate that the soil of Berlin is way too soft for such huge buildings - they'd sink too fast and might become unstable. Despite of this, some employees of Speer already talk about "Welthauptstadt Germania". So or so: So far, only a piece of the planned new West-East axis street has been finished, about 7 km long. For this reason, the famous Victory Column was augmented and moved to the "Großer Stern" (Great Star).