The Vlah Church was built around 1450 on the site of Bogumils' necropolis, which had around 150 stećci (monumental, ornate tombstones). Only two of them are preserved today. Originally they faced each other, and were recently reoriented to be side by side.
The church was initially made of 'plot', i.e. of sticks, switches and mud. It was rebuilt three times, and finally in 1864 the church received its current form. A guard rail around the church was built in 1897 using barrels of Ottoman rifles captured in 1858 during the Battle of Grahovac.
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.