The Gothic collegiate complex built from 1357–1389, with a splendid church, on which Pope John Paul II conferred the title of minor basilica (1989). Undoubtedly, one of the biggest tourist attractions beside the magnificent interior and furnishings of the church is the organ with 49 tones and 3522 pipes. The former capitulary library houses a parish museum, which is open to visitors. It contains the remains of the old outfit of the collegiate. Unfortunately, the rich vault as well as the collection of books and manuscripts largely scattered after World War II.
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.