The Tournai Cathedral, also known as the Cathedral of Our Lady, is a remarkable architectural feat and a Roman Catholic church located in Tournai, Belgium. It stands as a testament to various architectural styles, combining Romanesque, Gothic, and French Baroque elements. The cathedral's five towers and the transept with its apsidal ends are particularly distinctive, reflecting the transition from Romanesque to Gothic architecture. Recognized for its historical and cultural significance, the Tournai Cathedral has been a UNESCO World Heritage Site since 2000.