Bobrowniki Castle was built by the Teutonic Knights. Following the Peace of Thorn (1411), it was taken over by the Polish, later to become a residence of the local mayor. Since the 18th century the castle has been laid in ruins.
Bobrowniki castle was erected at the turn of the 14th and 15th centuries, after the purchase of Bobrowniki village by the Teutonic Knights in 1392, possibly as an extension of an earlier fortress. It was located on the site of an old stronghold, founded by the Duke of Dobrzyn, Ladislaus the Hump-backed. Due to the close proximity of the country border, the elders of Dobrzyń nad Wisłą constantly improved the fortifications around the castle, which became the seat of the local government.
In 1405 Wladyslaw Jagiello purchased Dobrzyn and Bobrowniki, but four years later the Teutonic Knights attacked the castle. With the help of the treason of the defending commander Bobrowniki castle went back into Teutonic hands only to be returned to the Polish in 1411. Its border location had once again become the cause of many investments in the modernization of the facility. However, it no longer played any military role in wars to come. During the Thirteen Years' War (1454–66) the castle served as a prison for captured Knights of the Teutonic Order. Changes of the national border ultimately deprived the building of any strategic role.
In the seventeenth century it was already devastated to the point of being abandoned by the local government. During the war with Sweden, in the second half of the 18th century, the structure was almost completely destroyed. In the nineteenth century it was formally decided to demolish the castle. The ruins do not have an owner to this day.
Little is known about the appearance of the fortress at the time of the Teutonic Knights or later. The object was probably two-winged (other sources say that it was a square), surrounded by walls and a moat, with one gate and a cylindrical tower. The only remains of the past splendor of the castle are elements of fortified walls and a sentry tower.References:
Roman Walls of Lugo are an exceptional architectural, archaeological and constructive legacy of Roman engineering, dating from the 3rd and 4th centuries AD. The Walls are built of internal and external stone facings of slate with some granite, with a core filling of a conglomerate of slate slabs and worked stone pieces from Roman buildings, interlocked with lime mortar.
Their total length of 2117 m in the shape of an oblong rectangle occupies an area of 1.68 ha. Their height varies between 8 and 10 m, with a width of 4.2 m, reaching 7 m in some specific points. The walls still contain 85 external towers, 10 gates (five of which are original and five that were opened in modern times), four staircases and two ramps providing access to the walkway along the top of the walls, one of which is internal and the other external. Each tower contained access stairs leading from the intervallum to the wall walk of town wall, of which a total of 21 have been discovered to date.
The defences of Lugo are the most complete and best preserved example of Roman military architecture in the Western Roman Empire.
Despite the renovation work carried out, the walls conserve their original layout and the construction features associated with their defensive purpose, with walls, battlements, towers, fortifications, both modern and original gates and stairways, and a moat.
Since they were built, the walls have defined the layout and growth of the city, which was declared a Historical-Artistic Ensemble in 1973, forming a part of it and becoming an emblematic structure that can be freely accessed to walk along. The local inhabitants and visitors alike have used them as an area for enjoyment and as a part of urban life for centuries.
The fortifications were added to UNESCO"s World Heritage List in late 2000 and are a popular tourist attraction.