 During the 1990s, interest arose in the redevelopment of Vienna's railway stations, particularly the Südbahnhof and Ostbahnhof termini, which were at right-angles to one another.The concept of a new integrated station that served north–south and east–west routes, including three TEN corridors, to replace both of the existing stations, was mooted.Around this time, Zurich-based Theo Hotz Architects and Planners were awarded an initial design contract to develop a new station solution for the area.