Altdorf (Peaceful) Built upon several islands within the Reik River, Altdorf has stood as the heart of the Empire for centuries. Travelers arrive daily from every corner of the world to visit the sights of the bustling city, and few will be left disappointed. The Temple of Sigmar and the Colleges of Magic both reside within the city walls, as well as the Imperial Palace, from where the Emperor himself rules the greatest realm of man.