Wat Phu, also written Vat Phou, is often introduced as a ruined temple at the foot of Mount Phou Kao in southern Laos. That description is accurate but incomplete. UNESCO inscribed the wider Champasak cultural landscape in 2001: a 39,000-hectare setting that links mountain, plain and Mekong River through temples, shrines, settlements and waterworks. The temple complex is its best-known centre, while the surrounding landscape preserves evidence of planning and religious ideas on a far larger scale than the visible stone sanctuary alone.
The landscape is arranged along an east–west axis from the Mekong toward Phou Kao, also known as Lingaparvata. UNESCO describes a designed sequence extending about ten kilometres, in which natural features and built structures expressed Hindu ideas about the relationship between humanity and the world. The site is roughly 500 kilometres southeast of Vientiane. Its place in Champasak Province matters to a visitor: Wat Phu is not a freestanding monument dropped into an empty field, but a sacred and archaeological landscape shaped by geography, water and settlement.