St John's Kirk is architecturally and historically one of the most significant buildings in Perth. The settlement of the original church dates back to the mid-12th century. During the middle of the 12th century, the church was allowed to fall into disrepair, when most of the revenues were used by David I to fund Dunfermline Abbey. The majority of the present church was constructed between 1440 and 1500.
Though much altered, its tower and lead-clad spire continue to dominate the Perth skyline. The Church has lost its medieval south porch and sacristy, and the north transept was shortened during the course of the 19th century during street-widening. A rare treasure, a unique survival in Scotland, is a 15th-century brass candelabrum, imported from the Low Countries. The survival of this object is all the more remarkable as it includes a statuette of the Virgin Mary. St John's Kirk also had the finest collection of post-Reformation church plate in Scotland (now housed permanently in Perth Museum and Art Gallery). Equally remarkably, the collection of medieval bells is the largest to have survived in Great Britain.
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.