The Cathedral of the Annunciation of Mary was built between 1781 and 1783 in Baroque style. During the Yugoslav Wars on September 15, 1991, the church burned down: the roof and the top of the tower burned completely, while the interior of the church was damaged by fire. The reconstruction began in 1992 and ended in 1999.
On May 25, 2000, with the Bull 'Ad christifidelium spirituali' Pope John Paul II erected the Diocese of Gospić-Senj, while bringing the church to the status of cathedral.
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.