This is the Westbahnhof Untergrundbahn Station.  The sign at the far right tells us that the Westbahnhof, a major connection point for all forms of transportation in Vienna, is upstairs; also, Line U6.  This picture was taken at about 8pm local time, so the rush hour is over.  If this picture had been taken in Paris, these people would be up to their ankles in trash.  Austrians wouldn't put up with that.