The stations were originally built prepared for conversion into a full-blown subway (which, apart from the U6, has much higher platforms in Vienna): if you disembark at Eichenstraße, you have to walk up three steps before you reach the bottom of the escalator.
We have subway at home:
The stations were originally built prepared for conversion into a full-blown subway (which, apart from the U6, has much higher platforms in Vienna): if you disembark at Eichenstraße, you have to walk up three steps before you reach the bottom of the escalator.