The new city of Kalmar built on Kvarnholmen around the mid-1700s. The transfer from the old town was largely completed in 1658. The new, fortified town was planned after the current renaissance ideals. According to this pattern were placed Kalmar Cathedral and town hall across from each other at a major square Stortorget Kalmar. The cathedral was built, designed by Nicodemus Tessin the Elder and is one of the foremost examples of Baroque breakthrough in Sweden. Kalmar Cathedral drawing series reflects the complex interaction between the new style, liturgical considerations, tradition and the fortress-city requirements. The work began in 1660, but it was interrupted on several occasions, including when the Scanian War (1675–1679) raged. Construction resumed, and Kalmar Cathedral stood finished in 1703.
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.