Darłowo (in full The Royal City of Darlowo: Polish: Królewskie Miasto Darłowo, German: Rügenwalde), is a town at the south coast of the Baltic Sea in MiddlePomerania, north-western Poland with some 15,000 inhabitants. Located in Slawno County in West Pomeranian Voivodship since 1999, previously a town in Koszalin Voivodship (1950-1998). The Baltic Sea is located in Northern Europe, bounded by the Scandinavian Peninsula, the mainland of Eastern Europe and Central Europe, and the Danish islands. ... Middle Pomerania is a geographical and historical region in the middle of Pomerania in northern Poland, between Western and Eastern Pomerania. ... Pomerania (Polish: Pomorze, German: Pommern and Pommerellen, Pomeranian (Kashubian): Pòmòrze and Pòmòrskô, Latin: Pomerania, Pomorania) is a geographical and historical region in northern Poland and Germany on the south coasts of the Baltic Sea between and on both sides of the Vistula and Oder (Odra) rivers, reaching the Reknitz river... West Pomeranian voivodship since 1999 West Pomerania (Polish: Pomorze Zachodnie, German: West Pommern; Latin Pomerania Occidentalis) or West Pomeranian Voivodship (Polish: województwo zachodniopomorskie) is an administrative region or voivodship in the northwestern part of Poland. ... Koszalin Voivodship (2) (Polish: województwo koszalińskie) - a unit of administrative division and local government in Poland in years 1975-1998, superseded by West Pomeranian Voivodship. ...
Darlowo (15000 inhabitants): The air pollution was more than 170 µg SO /m³.
Darlowo can be compared to Ustka as trading town, but the location of it is different.
Darlowo is not near the sea - the river has been the main transport road going inland and with this in mind there are two possibilities for the function of the castle.