Bartolo Longo started restoring a The Pontifical Shrine of the Blessed Virgin of the Rosary church in disrepair in October 1873. In 1875, Longo obtained a painting of Our Lady of the Rosary from a convent in Naples and raised funds to restore the image so as to locate it in the church. Miracles began to be reported and pilgrims began flocking in droves to the church. Three hundred people of the area pledged a penny a month for the work. Bartolo Longo was encouraged by Giuseppe Formisano, Bishop of Nola, to begin the construction of a larger church—the cornerstone being laid on the 8 May 1876. The church was consecrated on the 7 May 1891 by Cardinal Raffaele Monaco La Valletta.
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.