Vienna's Missing Metro Line

Why is there a line missing from Vienna's metro network? Let me explain. This video was made possible thanks to the generous support of my Patreon members. If you wanna join them in helping to keep my channel going, or simply to get free e-mail updates for all new uploads, Patreon's the place.   / tapakapa   You can also contribute to the channel with a simple money transfer. No sign-in, no recurring payments. https://donate.stripe.com/00gbJ13A8dw... MERCH https://teespring.com/stores/tapakapa... SUBREDDIT   / tapakapa   Sources: https://de.wikipedia.org/wiki/U-Bahn-...) https://de.wikipedia.org/wiki/U-Bahn_... https://homepage.univie.ac.at/horst.p... https://homepage.univie.ac.at/horst.p... https://homepage.univie.ac.at/horst.p... https://homepage.univie.ac.at/horst.p... https://www.mapnificent.net/vienna/#1... https://www.geschichtewiki.wien.gv.at... https://www.geschichtewiki.wien.gv.at... https://www.mediathek.at/portaltreffe... https://web.archive.org/web/200503180... http://wiener-untergrund.at/verworfen... http://wiener-untergrund.at/planungen... #Vienna #U5 #Subway #Metro #Austria