Hanoi Municipality

Hà Nội Municipality (Vietnamese: Thành Phố Hà Nội) is one of the 5 national-level cities of Vietnam. It is the location of Hanoi, the capital and second-largest city of Vietnam.

It is located in the Red River Delta region and is bordered by Vĩnh Phúc and Thái Nguyên provinces in the north, Bắc Giang, Bắc Ninh and Hưng Yên provinces in the east, and Hòa Bình and Phú Thọ provinces in the west. Its capital and largest city is Hà Nội, located in the north-east.

It is the most populous of the first-level divisions of Vietnam, with over 6 million people. However, it has a lower population than Saigon's metropolitan area, making Hanoi the second largest city in the country.

Geography
The prefecture is mostly a part of the flat and densely populated Red River Delta. However there are hills on the western edge bordering Hòa Bình Province. The Red River flows through the area and past downtown Hanoi, where the Đuồng River splits off to the east. The Black River forms the prefecture's westernmost boundary.

In the western corner is the small Ba Vì National Park, one of the last areas of natural jungle in the prefecture.