Hoa Binh Lake, the largest artificial lake in Vietnam, is likened to Ha Long Bay in the mountains. In the lakebed area, there are hundreds of islands, many forests, caves, and bays. One of the most beautiful bays here is Ngoi Hoa Bay, a place with poetic natural scenery, and a charming combination of mountains and water. It is the highlight in the core area of the Hoa Binh Lake tourist area and is called a pearl on the mountain.