The Cathedral of the Resurrection and St. Thomas the Apostle is located in the old town of Zamość. It was built in the late 16th century. It is located in the so-called Route of Renaissance. The Cathedral was established by the city's founder, Jan Zamoyski, and the author of the project was architect Bernardo Morando an Italian, who took as a reference to the Italian churches of 15th and 16th centuries. Initially it was a collegiate church until 1992, when the Diocese of Zamosc-Lubaczów, who rose to the rank of cathedral by decision of then Pope John Paul II was established.
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.