The church of St. Hyacinth in Słupsk was erected by Dominicans, who was brought by the prince of Gdańsk Mściwój II after 1278. Primary monastic buildings lay near the city, but as a result of the territorial development of the city and its reestablishment on the Lubeck Law in 1310, the area allocated to the Dominicans was located within the town.
The current gothic Dominican church was erected from the second half of the 14th century to the first half of the 15th century. In the sixteenth century after the Reformation the church was twice ransacked and near collapsed. Since the beginning of the 17th century it has been converted into an evangelical castle church. In the second half of the nineteenth century, a neo-gothic restaurant was erected, during which walls and windows surfaces were changed. After the fire of 1892, the neo-gothic gables and the pseudo-baroque helmet of the tower were introduced. During World War II, warfare spared the building, with only partial windows and roof damage.
The church consists of an elongated four-span chancel ended by a straight wall and a short, single-nave, three-span corpus. Its length is about 28 meters, width is 8.5 meters and the interior height is 15 meters. The tower is fused in nave on the west side. Lower part of tower is quadrilateral, higher is octagon. The church covers the common gable roof. The eastern gable of the chancel is stepped and crowned with pinnacles, between which are the lancet blendes and the oval openings. Outside the chancel has buttresses, between which are pointed windows. The interior is covered with stellar vault and divided by walled arcades.
Architektura gotycka w Polsce, red. T. Mroczko i M. Arszyński, Warszawa 1995.
Website turystycznybaltyk.pl, Podominikański kościół św. Jacka w Słupsku.