The beautifully decorated, Byzantine style Orthodox Church of Saint Peter and Paul was erected between the years 1893 and 1898 according to the design of architect Gustav Widemann from Františkovy Lázně (Franzensbad). It was built in the fashion of the Byzantine-old Russian church in Ostankino near Moscow. The funds necessary for the construction of the church were raised among wealthy Serbian and Russian clientele and nobility. The new church replaced the no longer satisfactory Orthodox chapel in Mariánskolázeňská Street.
The richly decorated Byzantine style church has a floor plan in the shape of a Greek cross and five gold-plated cupolas. The church walls are complemented with plentiful ornamental and figural murals. The church interior is dominated by a wooden majolica iconostasis with oil icons of saints by painter Tyurin. The iconostasis was originally made in Kuznetsovo for the World Exhibition in Paris in 1900. A bronze relief of Peter I by sculptor M. Hiller is installed by the staircase opposite Sadová Street. The church is accessible to the public during regular opening hours.
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.