Large cities are densely populated urban areas that serve as economic, cultural, and political hubs. They typically feature a wide range of services, including education, healthcare, and transportation. Examples of large cities include New York City, Tokyo, and London, each known for their unique characteristics and attractions. These cities often have diverse populations, with residents from various backgrounds and cultures. Large cities are characterized by their skyscrapers, public transportation systems, and vibrant nightlife. They also face challenges such as traffic congestion, pollution, and housing shortages, which require effective urban planning and management.