remains empty. Planned towers (not built) Berlin Tiergarten (two additional planned, not built) Hasenheide in Neukölln (planned, not built, had been built in Hamburg instead) Reichstag (considered for modification, but found unsuitable) Bremen Bremen Neustadt Contrescarpe (two planned, none built) Hamburg East Hamburg (planned, not built) Munich München Hauptbahnhof (eight planned, none built) Vienna Original plans were to place the three towers in Schmelz, Prater & Floridsdorf. See also Battle of Berlin Defence of the Reich Nazi architecture Martello tower References Further reading Foedrowitz, Michael. (1998). The Flak Towers in Berlin, Hamburg and Vienna 1940–1950. Schiffer Publishing. Ute Bauer Die Wiener Flaktürme im Spiegel Österreichischer Erinnerungskultur, Phoibos Verlag, Wien 2003. Flavia Foradini, Edoardo Conte: I templi incompiuti di Hitler, catalogo della mostra omonima, Milano, Spazio Guicciardini, 17.2–13 March 2009 Valentin E. Wille: Die Flaktürme in Wien, Berlin und Hamburg. Geschichte, Bedeutung und Neunutzung, VDM-Verlag, Saarbrücken 2008, Flavia Foradini: Berlino: Cercando sotto terra le tracce dei ciclopici sogni nazisti, Il Piccolo, Triest, 19 agosto 2012. Flavia Foradini: I bunker viennesi, Abitare, Milano, 2.2006 External links Several photos of the towers and bunkers Page about the Vienna flak towers What remains of the flaktowers today Renovation concept for the Hamburg Flak Tower Flaktowers in Berlin, Hamburg and Vienna (short film) Fortifications by type Nazi architecture Anti-aircraft guns of Germany Weapon fixtures Battle of Berlin Towers Fortifications in Germany Bunkers in Germany