Koszalin - Katedra Niepokalanego Poczęcia Najświętszej Maryi Panny

After Duke Boleslaw III (aka "Boleslaus the Wry-mouthed") had captured the tonws along the Balitic sea in 1107 the area became part of the Duchy of Pomerania, a vassal state of Poland and later of Denmark in 1185. It became part of the Holy Roman Empire from 1227. In 1266, the growing town was granted a charter (Lübsches Stadtrecht), autonomy and multiple privileges to attract German settlers from the west.

The city became a member of the Hanseatic League in 1386.

As a result of German colonization, the town became mostly German-speaking. In 1516 local Germans enforced a ban on buying goods from Slavic speakers. It was also forbidden to accept native Slavs to craft guilds.

In 1531 riots took place between supporters and opponents of the Protestant Reformation. In 1534 the city became mostly Lutheran under the influence of Johannes Bugenhagen.

The city was granted to Brandenburg-Prussia after the Treaty of Westphalia in 1648.

The "Katedra Niepokalanego Poczęcia Najświętszej Maryi Panny" (Immaculate Conception) was built between 1300 and 1333 as a three-nave basilica of the brick Gothic style. The massive, 56 meter high tower was built on the west side.

From 1534 to 1945 it served as the main church of the Lutheran congregation. Since 1972 it has been the cathedral of the new diocese of Koszalin-Kołobrzeg.