The Imperial City of Hue is a historic complex located in Hue, Vietnam. It served as the capital of the Nguyen Dynasty from 1802 to 1945. The city is known for its well-preserved architecture, including palaces, temples, and walls, which reflect traditional Vietnamese design and imperial influences. Designated a UNESCO World Heritage Site in 1993, the Imperial City features the Forbidden Purple City, where the emperor and his family lived. Visitors can explore its grand gates, moats, and gardens, offering a glimpse into Vietnam's royal past and cultural heritage.