Kalma manor was built as a hunting lodge for Baron Fedor von Medem after he acquired the estate in 1855. It was quickly repaired after being damaged by fire in 1905. Between 1906 and 1912, it was restored according to the project of architect G. Berchi. The most recent restoration was completed in 2004, the building then being made available for public event rentals. A museum with exhibits on milk production is located in one of the other estate buildings.
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.