The belfry of Namur, also called Saint-Jacob's Tower was constructed in 1388 as part of the city wall. It was remodeled as a belfry in 1746. It is one of the 56 belfries of Belgium and France classified as the World Heritage Site of the UNESCO.
In the beginning, one of the clocks of the Saint-Pierre-au-Château church served as belfry for the citizens of Namur, which is to indicate the time and to announce events in the city. After the destruction of the church, burned down during the siege of Namur in 1745, the Tour Saint-Jacques, the oldest of the three towers of the medieval city walls, became the city belfry. The Tour Saint-Jacques protected one of the city gates. Its bancloque (belfry clock) gave the signal for the opening and closure of the external city gates (from 1570 on).
At the beginning of the 18th century, the city wall was demolished but the Tour Saint-Jacques was preserved, restored and its clock was covered by an octagonal structure. This entire part was lifted upon a clock bulb. The Tour Saint-Jacques became Namur's city belfry in 1746.
References:Château de Niort is a medieval castle in the French town of Niort. It consists of two square towers, linked by a 15th-century building and dominates the Sèvre Niortaise valley.
The two donjons are the only remaining part of the castle. The castle was started by Henry II Plantagenet in the 12th century and completed by Richard the Lionheart. It was defended by a rectangular curtain wall and was damaged during the Wars of Religion. In the 18th century, the castle served as a prison.
The present keeps were the central point of a massive fortress. The southern keep is 28m tall, reinforced with turrets. The northern tower is slightly shorter at 23m. Both are flanked with circular turrets at the corners as well as semicircular buttresses. Each of the towers has a spiral staircase serving the upper floors. The Romanesque architecture is of a high quality with the dressed stones closely jointed.