Port cities are urban areas located along coastlines or riverbanks, where ships can dock to load and unload goods. These cities often serve as vital hubs for trade and commerce, connecting different regions and countries. The presence of a port allows for the transportation of various products, including raw materials and finished goods, facilitating economic growth. Many port cities have rich histories and diverse cultures due to their role in international trade. They often feature bustling markets, waterfront attractions, and a mix of architectural styles. Examples of notable port cities include New York, Shanghai, and Barcelona, each contributing significantly to global trade networks.