Built in 1645, the church of Madonna del Pilone was constructed by wish of the Queen Regent Christine Marie of France to remember the miraculous rescue from the previous year of a girl from the river. The miracle was attributed to the intervention of an image of the Virgin of the Annunciation, which was placed on a votive pillar. The painting became such an item of devotion, that this church was built at the site, enlarged in 1779, and furnished with a baptistery in 1807. Repeated reconstructions have altered the interior, and the church retains only some of the original decoration consisting of the stuccoes attributed to Giovanni Andrea Casella and the cupola frescoes by Bartolomeo Guidobono. The main altar houses the miraculous icon dating from 1587, now thoroughly restored.
The miracle for which the church was built recalls that the riverbank nearby once housed a number of mills. A flour miller's daughter fell into the river at dusk. Her Mother, hearing her cries, but unable to see where she was to rescue her, knelt before a nearby shrine built next to the mill, depicting the Annunciation of the Blessed Virgin. Legend holds a miraculous shaft of light illuminated the spot where her daughter was, and allowed her to be rescued by neighbors. News of the miracle led to the erection of a church by 1645, which became a Parish church March 2, 1807. The picture of the Madonna behind the main altar recalls the event.
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.