Kastoria municipality map Kastoria ( Greek : ???????? , Kastoriá ) is a city in northern Greece in the region of West Macedonia . It is the capital of Kastoria regional unit. It is situated on a promontory on the western shore of Lake Orestiada , in a valley surrounded by limestone mountains. The town is known for its many Byzantine churches, Byzantine and Ottoman -era domestic architecture, fur clothing industry, and trout . Name The name "Kastoria" first appears in 550 AD, mentioned by Procopius as follows: "There was a certain city in Thessaly, Diocletianopolis by name, which had been prosperous in ancient times, but with the passage of time and the assaults of the barbarians it had been destroyed, and for a very long time it had been destitute of inhabitants; and a certain lake chances to be close by which was named Castoria. There is an island in the middle of the lake, for the most part surrounded by water; but there remains a single narrow approach to this island through the lake, not more tha Express yourself. Organize your knowledge. Expand your mind. Discover the world. Revolvy connects you with interesting topics, lists and quizzes. Choose from hundreds of quizzes that test your knowledge. Search through millions of topics. Create a your personalized library of topics, and discover topics that others are following.