A port city is a town or city that has a major seaport and relies on maritime trade for its economy. These cities are typically located near coastlines, harbors, or rivers, allowing ships to easily dock and unload their cargo. Port cities often have extensive infrastructure such as docks, cranes, storage facilities, and transportation links to facilitate the movement of goods in and out of the port area. They also tend to have a diverse range of industries related to shipping and trade, including shipbuilding, logistics, and manufacturing. Overall, port cities are important economic hubs that contribute significantly to national and regional growth.