Kastoria (Greek: Καστοριά, Kastoriá [kastoˈrʝa]) is a city in northern Greece in the region of Western Macedonia. It is the capital of Kastoria regional unit, in the geographic region of Macedonia. 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, its lake and its fur clothing industry.