长安 (Cháng'ān) was an ancient capital of several Chinese dynasties, most notably the Tang Dynasty. Located in present-day Xi'an, it served as a cultural and political center for over a millennium. The city was known for its impressive architecture, bustling markets, and diverse population, making it a hub for trade and cultural exchange along the Silk Road. As a major city, 长安 was home to many influential figures, including poets like Li Bai and Du Fu. Its layout featured wide streets and grand palaces, reflecting the grandeur of imperial China. Today, 长安 remains a symbol of China's rich history and cultural heritage.