The Vidovdan Heroes Chapel is a Serbian Orthodox chapel and mausoleum located on the Holy Archangels Georgije and Gavrilo Orthodox Cemetery located in Sarajevo.
The crypt of the chapel contains the bodily remains of Gavrilo Princip and other members of Young Bosnia who took part in the assassination of Archduke Franz Ferdinand on 28 June 1914.
The twelve people interred in the crypt of the chapel are Gavrilo Princip, Bogdan Žerajić, Vladimir Gaćinović, Nedeljko Čabrinović, Danilo Ilić, Veljko Čubrilović, Neđo Kerović, Mitar Kerović, Mihajlo Miško Jovanović, Jakov Milović, Trifko Grabež and Marko Perin.
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.