Hanoi is the capital of Vietnam. It lies on the Red River Plain in northern Vietnam. The second-largest city of Vietnam, area 3,324 square kilometers, population 6.23 million. Hanoi has always been an old city that possesses a long history of many centuries. The Hanoi Neighborhood was originally settled in 3000 BC. Since the 11th century, it has been the political, economic, and cultural nucleus of the country. It abounds with historical relics and notable places to visit, hence has come to be known as the "Millennium Cultural Relics Land".