Henry I the Bearded
In 1337, the Royal Castle in Poznań was the largest castle in the Polish Kingdom, modelled after the palatium of Henry I the Bearded in Legnica. The castle consisted of a tower built by Przemysł I and a huge building (63,0 m x 17,5 m) with three levels and a basement. It is uncertain whether the castle's characteristic roof, consisting of four parts, existed at that time.