Submitted by Editors on October 10, 2008 - 6:06am. Saint-Sernin basilica Toulouse/Midi-Pyrenees Basilique St-Sernin, Toulouse Saint-Sernin basilica located in Toulouse, France was built during the Romanesque Period between AD 1080 and 1120. It is located on the site of a previous, 4th century basilica which contained the body of Saint Saturnin