The Porte de La Val, this exceptional witness to the medieval walls of Bouvignes is located opposite number 15 rue Cardinal Mercier. Its construction dates back to the second half of the 14th century (around 1380). The ensemble, which was restored in 1904, was listed on April 24, 1948.
The gate takes the form of a covered passage bastioned by two identical circular towers.
The west tower or Tour de La Val, of which only the elevation of its first level is preserved, has three loopholes arranged almost equidistant. The tower retains an intramural staircase to the north. It is accessed from the first level through an opening under a low arch, the staircase is oriented east-west and led to the second level, now level.
To the east, the opposite tower, known as Sainte-Barbe, is laid out in the same way but its internal arrangements are reversed. Its two large loopholes with niches are remarkably preserved. The building has retained an appreciable elevation.
The tower also has to the north, an internal staircase giving access to the second level but inversely oriented with respect to that of its twin.
Interior accessibility of the two towers could only be possible from the first level of each
Already in 1858, plans were made to dismantle the Porte de La Val. It was partially restored around 1904. A second restoration took place in 1977-1978, but this focused mainly on the wall of the count's castle ending up against the western choir of the church. These works were carried out under the direction of the architect Bonaert.