Of the impressive defense system of Racibórz, which was being constructed throughout the Middle Ages until the early Modern Times, a few fragments of the walls and the building known as the 'Tower Prison” have been preserved to this day. The tower is the most distinctive part of the city walls. Its image can be found on the logo of the city, as well as on the commemorative coin from 2007. The tower was built in the second half of the sixteenth century.