The Barbican, called Rondel ( saucepan), is the most important, largest and most beautiful circular fortification. It was founded at the end of 15th century during the reign of King Jan Olbracht.
The three metre high walls and 130 gun ports are really impressive. And in diameter is almost 25 metres round. There are also seven observations towers. Cracow's Barbican is one of the largest of three barbicans in Europe.
It was never conquered by enemies. Nowadays, this is a building where concerts, events and knights' tournaments take place.