What is the name of the rich city in Poland?

Could you please clarify what you mean by "the rich city in Poland"? Poland is a diverse country with many cities that have their own unique economic strengths and characteristics. For example, Warsaw, the capital city, is a major financial and business hub, while Kraków, a historic city, is known for its tourism and cultural industries. It would be helpful if you could provide more context or specific criteria for identifying "the rich city" in Poland, as there may be multiple cities that could be considered "rich" based on different factors.