Kastoria (Greek:Καστοριά Kastoriá [kastoˈrʝa]) 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, Ottoman-era domestic architecture, fur clothing industry, and trout.