越池市
Ba Vì is the district lying in northwest Hanoi, containing a majority of Ba Vì mountain running through the south of the district. It borders Sơn Tây town to the east and Thạch Thất to the southeast. It also borders Lương Sơn district to the southeast and Kỳ Sơn of Hòa Bình Province to the southwest. To the north, the district is bordered by Việt Trì City, Phú Thọ, with the boundary of the Red River (Thao River) located in the north. Bordering the west of the district are Lâm Thao, Tam Nông and Thanh Thủy districts of Phú Thọ. Ba Vì is also bordered by Vĩnh Tường district, Vĩnh Phúc province to the northeast via the boundary of the Red River.