The defense walls in Grodków were built at the end of the 13th century. In the first half of the 14th century, on the initiative of the bishop of Wrocław, Przecław of Pogorzela, they were raised and reinforced with towers. Around 1600, the city walls were renovated and the towers received, among others, renaissance attics in the finial. In the years 1664-1671, the walls, destroyed during the Thirty Years War, by the efforts of bishop Sebastian Rostock, were once again renovated. At the beginning of the 19th century, the moat was filled, part of the fortifications were pulled down, but some towers were also renovated.
The ring of fortifications had a shape similar to an oval with four gatehouses: Ziębice Gate from the west, Lewińska Gate from the east, Wrocław Gate from the north and Nysa Gate from the south. The defensive walls were made of field stones in the lower storeys, while in the upper storeys of bricks.
Until now, fortifications have been preserved in fragments in the south-western and northern parts of the city. We can see the Lewińska and Ziębie gates, both topped with renaissance arcades, and the Prison Tower.