The Romanesque church in Kalinčiakovo is a Reformed chapel, originally built in the 12th century in the Romanesque style. The building has been the property of the Reformed Church in Slovakia since 1655.
After a fire damaged the building, the chapel was rebuilt between 1833 and 1835, with further renovations in 1932 and from 1957 to 1958. The 1833 fire revealed some frescoes depicting celestial bodies and animals.
The church is built from hewn stones and strengthened with stooks. The typical Romanesque semicircular apse is vaulted by concha. The apse is continued by aisle. The Romanesque windows survived the fire. In 1932 the Romanesque portal was revealed on the south frontlet. The Classicist organ dates from 1833. Originally the church was enclosed within a fortress wall of which only a slightly rising entrenchment remained.
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.