The fortress finds it form

By the mid 1400's Scôz am Rhein had become an important city in the region, and the development of the Burg clearly shows just how important it was. New towers were built, and a stronger wall was erected around the castle.
The absence of a traditional City Wall made the Burg even more important for the citizens of Scôz am Rhein. The Grand Dukes had made a promise to protect the city, "forever and by grace of God in all days dark and light alike" (Muskar II in The Treaty of Handl 1323).
In times of turbulence the citizens were granted refuge behind the Burg's mighty walls.
To make the Burg even more inpregnible, Grand Duke Muskar IV built the Moats around the Castles between 1409-14.

Note the long bridge that stretches from the Burg, over Obzder Inszel and all the way to Grosz Inszel. The citizens called the bridge Heiratszdy ("The Marriage"), since it symbolized the close links between the Church and the Dukes.

The bishops of Scôz had not allways been happy to serve the Grand Dukes though. All through the 13th and 14th century the local Bishops were constantly critizising the Grand Dukes. This of course annoyed the rulers of the city, but in 1405 Grand Duke Wolraf managed to appoint a new Arch Bishop: his own son Ombrius.
When the Pope protested, Wolraf had Grosz Inzel renamed after one of the most notoriously rebellious bishops: Panardo (1277-1295). This gesture apparently pleased the Pope, and Wolraf's son remained Arch Bishop until his death in 1452.