The Museum of Koszalin is the city's main regional museum, useful for making sense of a part of Pomerania whose borders, languages, and rulers have shifted repeatedly. Collections cover archaeology, local history, ethnography, and art, with the emphasis on Koszalin and its surrounding countryside.
It is a measured, local museum rather than a blockbuster. That makes it most rewarding for travelers who enjoy regional context: old tools, maps, domestic objects, and fragments of history that explain why this Baltic hinterland feels both Polish and historically layered.