Kastoria is a city in northern Greece in the region of West Macedonia and it is known for its many Byzantine churches, Byzantine and Ottoman-era domestic architecture, fur clothing industry, and trout. Kastoria is believed to have ancient origins. Livy (XXXI, XL) mentions a town near a lake in Orestis, called Celetrum, whose inhabitants surrendered to Sulpitius during the Roman war against Philip V of Macedon (200 BC). Kastoria is an international centre of fur trade, which dominates the local economy. Fur trade is the biggest factor of Kastoria economy and it started back to the 14th century, now there are more than 300 small and big fabrics of fur in the city. Other industries include the sale and distribution of locally grown produce, particularly wheat, apples, wine and fish.