The Imperial Citadel of Thăng Long, a historic symbol of Hanoi, stands as a testament to Vietnam's rich history. This ancient site, which began construction in 1010 under Emperor Lý Thái Tổ, was the heart of the country's political life for centuries. It has witnessed the rise and fall of dynasties, survived numerous wars, and has been recognized by UNESCO as a World Heritage Site, celebrating its millennium in 2010. Today, visitors can explore the remnants of this once-magnificent citadel and imagine the grandeur of past Vietnamese empires.