Fiorentino was the designer of the galleries enclosing the large castle courtyard. It was the most important part (in artistic way) of rebuilding by this Italian man. Building started in 1507, after Fiorentino's death in 1516 it was continued by Bartolomeo Berrecci (1480-1537), and then after his death by his collaborators. This courtyard is considered to be the most beautiful renaissance courtyard in Central Europe. The galleries, which made the main communication area of the building were used to representative and sociable goals. It also enabled royal people assisting in ceremonies and tournaments. The galleries were built on three levels and spread on wing walls of the castle. It has arcades on a first and second levels. It makes impression that it tidy up the courtyard in a spatial way and decorate it. Fiorentino, as a renaissance architect, was deriving from classical art ("all'antique"), but more freely, such that the architectural order was not in accordance with classical rules. In the highest level, each of the galleries is folding from two stems, which are put up one on the other and connected by knots, which never meet. It has triple function: connecting, crowning and bearing. Worth of comment are also jugs placed on a capitals. This rebuilding changed the Gothic castle into a Renaissance residence.