Basilica di Santo Stefano Maggiore was established in the 5th century. Originally dedicated to both Saint Zechariah and Saint Stephen, it was later dedicated to Saint Stephen only. Throughout its history, has undergone several reconstructions, expansion and restoration.
The original church building was built around the year 417 on the initiative of the future bishop Martinianus. It was destroyed by fire in 1070 and it was rebuilt in romanesque style in 1075.
On 26 December 1476 it was the site of the assassination of Duke Galeazzo Maria Sforza, who had come to the basilica for the celebration of the patron saint. On 30 September 1571 in Santo Stefano was baptized the painter Michelangelo Merisi, better known as Caravaggio.
Since 1594 the church underwent a series of interventions, including enlargement of the apse and of the main altar in the early 17th century.
The church preserved the bodies of saints Martinianus, Ausanus and Mansuetus, archbishops of Milan, in 1988 translated to the Milan Cathedral. St. Charles Borromeo also translated here the bodies of saints Leo, Arsazius, Marinus, Mammes and Agapetus.
References:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.