The remains of the fortified wall and adjacent towers of the ancient city of Bononia are located in an area of 20 hectares and dated back to 1-4th century AD. Bononia is situated under the modern town of Vidin and part of the castle "Baba Vida".
Bononia is the antique name of town of Vidin. The town aroused in the end of 1st and the beginning of the 2nd c. after Christ as a castle and road station within the frames of Moesia. Most probably on that place was located the auxiliary military part, occupied with the construction of Danube riverside road, providing defenseof the Danube border.
After separation of Moesia provincein year 86 after Christ, Bononia entered into the boundaries of Upper Moesia and was attaches to the urban territory of Raziaria, which was the main town then.In 2nd – 3rd c. the town marked a bloom. Its port had been serving the Danube armed and commercial navy. By the end of 3rd c. and the beginning of 4th Bononia is already a significant settlement with fortified areaand solid defense system, which made it equal to the biggest town’s centers of the newly established province of Riverside Dacia. The fortification system of the town is famous since the archeological investigation of the separate parts of the fortification wall, which allows its tracing and determining of the fortified surface. Its plan represents almost a rectangle. The length of the northern part is about 365m, and of the west one – around 600m. 9 Nos. adjoining towers had been discovered so far, with diameter of 19m and thickness of the wall - 3,70m. The antique Bononia survives up to year 586, when was conquered by the Avars and was destroyed.
Artifacts found in city can be seen in the Regional History Museum, Vidin.
The ancient town of Ratsiaria is the most significant Roman and Late-antique center of nowadays North-western Bulgaria. Its remains are locatedon the territory of Archar village, on some 30 km away from town of Vidin alongside the Danube River. The name Ratsiaria derives from the name of a type of ships /ratis/, used during the Antique times. After the territorial reform in year 86 after Christ the town entered into the Roman province Upper Moesia. As a result from the Dacian wars from the beginning of 2nd c. and the removal of the boundaryof the Roman Empire northwards from the Danube River, Emperor Trajan is raising Ratsiaria into a rank of a colony. This status is giving him the right of autonomy, and his residents had turned into enjoying full-right Roman citizens. During 2nd – 3rd c the town experienced its boom, organized under Italian model. During that time it turned into a big craft and commercial center. This is evident by the discovered with the archeological excavation cultural-historical values.
After the loss of Dacia province in 272, the Roman Empire executed new administrative reform and Ratsiaria is proclaimed as a capital of the newly-established province Riverside Dacia. During that time the armed presence is strong here, because again the Danube became the border of the empire. In the town were dislocated the main armed forces of 13th Double legion.In Ratsiariawas situated one of the six in total state armed workshops. The discovered archeological monuments determined it as an impressive center of art in Moesia province.
There is some information that even in 2nd c. there had been existing workshops for architectural decoration, gravestone plastics, and of goldsmiths’ articles of the jeweler art. The discovered inscription which has great significance for the town’s history saying:” Ratsiaria of Anastasias will eternally flourish”. Probably after the Hunnish’ attacks in 5th c with Emperor Anastasias I /491-518/ had given his support for the restoration of the town. Ratsiaria had been last mentionedby chronicler Theophylakt Simokata in relation to the conquering of the Avarians in 586. This event put a mark of the end of several-centuries development of the riverside Roman town.
The condition of the site is very poor. Findings may be seen in the Museum of History - Vidin.