The U55 line is an amazing construction. Like the article says, you can easily walk the whole line in 10-15 minutes. The stations, two of them + the Hauptbahnho

The U55 line is an amazing construction. Like the article says, you can easily walk the whole line in 10-15 minutes. The stations, two of them + the Hauptbahnhof are huge and look very expensive. Then when the train finally comes, it's one car only and plays this silly music. Actually they are building the extension, but I'm not holding my breath they'll finish it in 2020, even though they've been building it for a couple of years already.