Discalced Trinitarians were brought in to Krotoszyn in 1731 by Józef Potocki, the Voivod of Kiev, the then-owner of the town. 1733 saw erection of a cloister building; in 1766–1772, a brick temple was constructed on the site of a previously demolished wooden church. The edifice’s founder was Ludwika Potocka, nee Mniszech; the church building was probably designed by Karol-Marcin Frantz. The Prussian authorities abolished the cloister in 1819. Today, the building houses, inter alia, an art gallery and a Regional Museum, featuring an interesting exhibition illustrating the history of the town. The temple functions as a parish church.
The baroque single-nave church of Saint Apostles Peter and Paul is an edifice of a diversified solid, with rounded quoins. It is covered by a multi-hipped roof, with an ave-bell on the ridge. Adjacent to the nave at the west is a tower topped with a cupola featuring a lantern. The interior’s uniform late-baroque outfit dates to 1772–1775. A boat-shaped pulpit is an attractive feature.
The former cloister’s standalone storied building is founded on a rectangular projection. Covered by a three-hipped roof, it has in its western elevation an arcade portal dated ca. 1733. The interiors are covered by a.o. cloister vaults with lunettes; a beam ceiling survives in the vestibule.
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.