The Notre-Dame Cathedral in Tournai is seen as a precursor of the vast Gothic cathedrals, constructed in the school that developed north of the Seine.The building of the Cathedral of Tournai lasted from 1146 until 1325. At first, a Romanesque cathedral was built because Tournai had become seat of a bishopry. The main nave of the present cathedral was constructed during that period. Later on, the architects became more influenced by the then fashionable Gothic style. This can be seen in the 5