At Krakow, Poland's city center is the Sukiennece, or the Cloth Hall, which is a UNESCO World Heritage Site. Built in the 15th century, it was once the hub for international trade. Now it has hundreds of booths full of Polish crafts, jewelry, and clothing. Not at the best prices, mind you, but it is all here in one place. If you ever visit Krakow, this is where you go for retail therapy!