As early as in the 13th century, the town had wooden and earth fortifications consisting of ramparts, palisades, moats and timber gatehouses. The privilege from 1283 mentioned about it. At the beginning of the fourteenth century, the rebuilding of a timber palisade to a stone wall reinforced with towers began. In the fifteenth century, the fortifications were strengthened in relation with the development of firearms, especially gates obtained additional protections. From the seventeenth century fortifications lost their importance and gradually fell into disrepair. In 1838, it were demolished. In 1842, the gatehouses were liquidated, leaving only the tower of Żarska Gate. In the 20s of the 20th century, the tenement house was added to the preserved tower and its renovation was carried out, replacing the roofing with tin.
The town was founded by the river Lubsza and secured with a circumference of the fortifications similar to the oval. The stone walls were strengthened by sixteen, unevenly spaced half towers. They were located the most densely on the western and north-eastern sides. Two gates led to the town: Gubińska from the north-east and Żarska from the south-west and also two wickets. They were placed in the gatehouse towers, and in the 15th century, the Żarska Gate was additionally strengthened by placing a cylindrical, seven-storey brick tower next to it. The outer zone of defense was the river and its water-powered moat. A castle located in the north-western part of the circuit was coupled with the fortifications of the town.
At present, the only surviving fragment of Lubsko’s fortifications is the tower of Żarska Gate, located in the south-western edge of the Old Town, at Mikołaja Kopernika 19 street.
Pilch.J, Kowalski S., Leksykon zabytków Pomorza Zachodniego i ziemi lubuskiej, Warszawa 2012.