Château or Donjon de Bours was most likely built in the 12th century by Hugues de Bours. Originally it would have had a bailey defended by a crenellated wall guarding several outbuildings. Both the bailey and the castle would have been moated. At present all traces of the bailey are gone.
Bours Castle is a keep built out of sandstone and has a rectangular plan with six corbelled turrets. It has walls of 70 cm thick and 2 floors. It is generally assumed that during the mid-13th century the keep would have been higher.
During the first half of the 15th century the castle was owned by Maillotins de Bours who restored and enlarged the castle but probably did not change the keep.
In 1543 Bours Castle was burned down.
At the beginning of the 20th century there was talk of demolishing the keep but luckily that did not happen. During the second half of the 20th century the keep was restored several times and used as a town hall.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.