A recognisable symbol of Nin is the Church of St Nicholas, located in the field of Prahulje, it is very important for the rulers of the Croatian dynasty and for the history of Croatia and Nin. According to tradition, seven Kings were crowned in Nin, and every crowned ruler rode on horseback to the Chruch of Saint Nicholas, and it was in fact here that he would be presented to the people by the same symbolic ritual-on that mound he would cut with a sword the four corners of the world.
The small church is built on an earthen mound which rises above the wide field, and it is just here on this place that the visitor can experience an unforgettable sunset. In the mound can be found, as yet, unexcavated prehistoric graves. Due to the danger from the Turks as an addition to the church, a defence crown with 8 battlements was built in the 16-17th century, which served as a watch tower. The Church of Saint Nicholas is the only preserved example of the early-Romanesque architecture of such form in Dalmatia, which dates from the end of the 11th and the beginning of the 12th century.
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.