Given to the tradition, Eustorgio, newly elected bishop of Milan (344-350 d.C.), during a trip to Costantinople received from Costante, head of the Eastern Roman Empire, the remains of the Magi. Eustorgio transported them on a cart to the entrance of Milan, at Porta Ticinese, where the cart sank into the mud and it was not possible to remove it. The incident was interpreted by Eustorgio ad a sign of God and there he built the Basilica, that even today, to indicate the presence of the relics, has on its top an eight-pointed star instead of a cross. The interior consists of three naves covered by cross vaults. Since ‘300 influential families added to the Romanesque plant several chapels, including the Portinari Chapel (1468), one of the most famous example of Renaissance in Milan. Currently in the second cloister it has been opened the Diocesan Museum. In 2000 the parish took charge of a conservative restoration of the façade of the Basilica and the first three chapels of the southern flank. It also started a funcional project to built a museum.