Krakow City is the starting point of the old city of Krakow, and now a circular castle is left. At the junction of the new and old city, it is unique in the traffic. This was once hailed as a good defense project in the Middle Ages. It is connected to the city wall and has a passage through the gate of San Florian. Built in the Middle Ages, in order to protect the enemy invasion, the most complete with the moat wall surrounded the entire Krakow royal city.