Fun fact, the airport was once the largest building in the world, and is still today in place 28 (source: Wikipedia) and the longest building in europe.
What is also missing in the article: Its massive underground site. During WW2, the airport was used to build combat airplanes. For parts supply, it has its own subway station (not in use today) and even a water power plant to run off grid.
> What is also missing in the article: Its massive underground site.
Not to mention the former NSA/CIA station upstairs from the Cold War days! I visited both the station and the underground site some years ago before they closed the airport. Not sure, though, if those places are now part of the public tours, too.
What is also missing in the article: Its massive underground site. During WW2, the airport was used to build combat airplanes. For parts supply, it has its own subway station (not in use today) and even a water power plant to run off grid.
Source: https://www.berliner-unterwelten.de/verein/forschungsthema-u... (in German)