Notre-Dame Cathédral (Cathedral of Our Lady) in Tournai was mainly constructed in the 12th and 13th centuries. The cathedral was built in the Romanesque style, but it also has Gothic style elements. In the beginning of the 12th century, there was an exchange of influence between the architecture of the Ile-the-France, Rhineland and Normandy.

The five towers at the intersection of the transept, central part of the cathedral, is characteristic of the considerable influence of the Tournai cathedral on cathedrals in northern France and the medieval churches in the Flemish part of Belgium. The proportions of the building are really impressive: length 134 meters, width 58 meters for the choir only. The transept exceeds 67 meters and the towers are 83 meters high.

The Romanesque choir was replaced by a Gothic choir in the period 1243-1255 and was inspired by the choir of the cathedral in Amiens. The nave and transept houses the largest collection of sculptures and Romanesque wall paintings in Belgium.
Notre-Dame Cathédral - landmark of Tournai - is a gem of medieval architecture, listed as a World Heritage site by UNESCO since 2000.