The defensive walls in Recz were built of field stone, probably with a brick superstructure. They did not have battlements, it is possible that they were topped with hoardings. They had a thickness of about 1.10 - 1.20 meters, and their height at the highest point reached 5 meters. In the second half of the fourteenth century, the wall was raised to a height of 6 - 7 meters. Their full circumference was about 1,470 meters and was reinforced with evenly spaced towers.