The main draw for visitors is the natural landscape on either side of the province.
Pu Luong Nature Reserve (also spelled Phu Luong) sits 180 km from Hanoi in the north-west of the province, straddling two parallel mountain ridges of contrasting character. The south-western ridge is rounded forested hills; the north-eastern ridge is heavily dissected limestone karst, a continuation of the range running from Cuc Phuong National Park to Son La. Elevations range from 60 to 1,667 m.
The reserve holds primary forest across five subtypes, with at least 1,109 documented vascular plant species. Wildlife surveys have recorded 84 mammal species, 162 birds, and 55 fish. The most significant resident is Delacour's Leaf Monkey — a critically endangered primate endemic to Vietnam — with an estimated 40–45 individuals, one of the largest known populations in the country.
Trekking and mountain biking are the main activities. Most visitors approach on a 5–6 day circuit from Hanoi via Mai Chau, staying with Thai and Muong families along the route.