Boo fideikommiss (estate in tail) was founded in 1735. The first owner was one of the generals of the Swedish king Charles XII, baron H. J. Hamilton. After imprisonment in Russia he took up residence at Boo. Thereafter the estate has been inherited within the family Hamilton af Hageby. The current Boo Castle was built to the grounds of older manor house in 1874-1882. The Neo-Gothic building was designed by Johan Fredrik Åbom. Boo was the a residence of Hugo Johan Hamilton af Hageby. Today it is still a private residence.
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.