The Basilica of St. Sernin (Occitan: Basilica de Sant Sarnin) is a church in Toulouse, France, the former abbey church of the Abbey of St. Sernin or St. Saturnin. Apart from the church, none of the abbey buildings remain. The current church is located on the site of a previous basilica of the 4th century which contained the body of Saint Saturnin or Sernin, the first bishop of Toulouse in c. 250. Most of the current building was constructed in the Romanesque style between about 1080 and 1120, with construction continuing thereafter. Saint-Sernin is particularly noted for the quality and quantity of its Romanesque sculpture.