The Church of St. Anne is one of the leading examples of Polish Baroque architecture. The church was first mentioned in 1381 in the deed of donation of Sulisław I Nawoja of Grodziec. In 1407 the church was completely destroyed during a fire, but it was rebuilt the same year in the Gothic style by King Władysław II Jagiełło. The king also attached the Church formally to the Jagiellonian University by giving it the right to nominate the parish priest. In 1428 the choir was reconstructed and enlarged. By a charter dated October 27, 1535 St. Anne's was raised to the rank of a collegiate church.
In 1689 the Gothic edifice was demolished as it proved too small for the growing cult of Saint John Cantius, the patron saint of the Jagiellonian University who's laid to rest there. In 1689-1705 the new Baroque church was erected, modelled on Sant'Andrea della Valle in Rome. The architect was a Polonized Dutchman Tylman van Gameren, a chief architect at the court of John III Sobieski. The interior stucco decoration is the work of Baldassare Fontana, and the polychromy assisted by painters and brothers Carlo and Innocente Monti and Karl Dankwart of Nysa. The painting of St. Anne in the high altar is the work of Jerzy Siemiginowski-Eleuter, court painter of King John III Sobieski. The 18th-century paintings in the stalls showing the life of Saint Anne are by Szymon Czechowicz. In the transept there is an altar of the adoration of the cross to the left, and the tomb of John Cantius to the right.
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.