Hoàn Lão
Hoàn Lão is the capital of Bố Trạch District, situated via north-eastern Quảng Bình, is located about 13 km north of Đồng Hới.
The township (thị trấn) is located about 30 km east of Phong Nha-Kẻ Bàng National Park a UNESCO Heritage Site. Hoàn Lão covers 5,70 km² and had a population of 7,372 in 2012.
Coordinates: 17°35′N 106°32′E / 17.583°N 106.533°E
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