Sázava Monastery is a former Benedictine abbey and a monastery in Bohemia, established by Bretislaus I, Duke of Bohemia around 1032. It is situated some 30 km southeast of Prague, on the right bank of the eponymous Sázava river, a right tributary of the Vltava.
The monastery is notable as having followed Slavonic liturgy in the 11th century. It was re-established under the Latin rite in 1097, until its destruction in 1421 due to the Hussite Wars. It was again re-established as part of the re-catholization of Bohemia under Habsburg rule in 1664, and finally dissolved in 1785.
The extant buildings mostly date to the Baroque period, with 19th-century neo-Renaissance extensions, with some remaining structures in the Gothic style of the 13th to 14th centuries, notably the unfinished three-nave Gothic basilica.
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.