It seems the Royal Court Street near the Rotušės (Town Hall) square was formed in the 15th century. Possibly it was planned in the first stage of town planning. The data of the archaeological research states that from the 15th century the surface of the street was improved by laying gravel. The part of the street closer to the castle was formed even earlier – there are layers that have been discovered dating back to the 14th century and the turn of the 14th-15th centuries. It is thought that from the 15th century wooden buildings were constructed on this street; there were ceramic kilns established in this location, which was the edge of town at that time, and later other crafts were developed. Closer to Kaunas Castle the street turned into the territory of the jurisdiction of the Lithuanian Grand Duchy ruler.