Lysá nad Labem was firstly mentioned in the Chronica Boemorum, with its existence mentioned in 1034. In the 13th century, a castle was built here and until the reign of the Luxembourgs, the town was property of the Czech queens. Since 1291, there has been evidence of Lysá being a town. In that year, Queen Judith of Habsburg issued a charter to unite the settlements of the Lysá estate into one economic unit.
During the Hussite Wars the town suffered a lot. At the turn of the 15th and 16th century, the Smiřický family of Smiřice rebuilt the dilapidated castle into a late-Gothic castle. In 1548, Emperor Ferdinand I added Lysá to the intimate dominion as a hunting centre. After a large fire, he had the castle rebuilt in the Renaissance style.
The sustainable development of the town was stopped by the Thirty Years' War. In 1647, Lysá was acquired by the empire general Johann von Sporck and then the town began to flourish. After the general's death, his son Franz Anton von Sporck began to reign. He made the most important changes in 1696 when the Augustinian monastery was restored and the new parish church and the Chapel of Three Kings were built.
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.