The Basilica of San Simpliciano is a church in the centre of Milan, northern Italy, the second oldest in the form of a Latin cross, first erected by Saint Ambrose. It is dedicated to Saint Simplician, bishop of Milan.The site of the present church was occupied in the 3rd century AD by a pagan cemetery. Here St. Ambrose began the construction of the Basilica Virginum ("Basilica of the Virgins"), which was finished by his successor Simplicianus, who was buried here. A brick with the mark of the Lombard King Agilulf shows that repairs were made between the years 590-615 AD.