A Capital Built on Water
The Khmer Empire that built Angkor Wat controlled a swath of Southeast Asia stretching across present-day Cambodia, Thailand, Laos and southern Vietnam, and it ran on an engineering feat as impressive as any temple: a network of barays, moats and canals that stored monsoon rainwater and released it through the dry season, letting the capital feed a population some historians put in the hundreds of thousands. Angkor was, by some measures, the largest pre-industrial urban settlement on Earth. The empire's kings expressed their power through architecture. Each new ruler tended to build his own state temple, and the results — Angkor Wat, the walled city of Angkor Thom, the tree-swallowed monastery of Ta Prohm — are less a single city than a stack of capitals from different reigns, laid over the same stretch of forest.
The empire's decline through the 14th and 15th centuries is still debated by historians, but the leading explanations point back to water: prolonged drought interrupted by violent monsoon flooding overwhelmed the hydraulic network Angkor depended on, while repeated conflict with the rising Ayutthaya kingdom to the west drained resources needed to maintain it. By the 1400s the Khmer royal court had shifted south toward Phnom Penh, and Angkor's temples were left to the jungle — though never entirely abandoned. Buddhist monks maintained a presence at Angkor Wat continuously for centuries, and local Cambodians always knew where the temples were.
Rediscovery and Restoration
Angkor's "rediscovery" is often credited to the French naturalist Henri Mouhot, whose 1860s journals — published after his death — introduced the temples to a European readership stunned that a civilization capable of this had been so thoroughly forgotten in the West. The description was overstated even at the time; Portuguese and Spanish travelers had written about Angkor Wat as early as the 1500s, and it remained a functioning pilgrimage site throughout. But Mouhot's account did trigger something real: sustained French scholarly and restoration interest, formalized through the École française d'Extrême-Orient, which spent decades clearing forest growth, stabilizing structures and piecing together the empire's history from inscriptions carved into the temple walls themselves.
That restoration work was violently interrupted in the 1970s. Cambodia's civil war and the Khmer Rouge period emptied Siem Reap and closed Angkor to the outside world for the better part of two decades; some temples were mined, and the country's own archaeologists and conservators were among the era's victims. Restoration resumed in earnest only in the 1990s, this time as an international effort — Cambodian, French, Japanese, Indian and other teams still work at Angkor today, each typically responsible for a different temple complex.
A Town Built Around a UNESCO Site
Modern Siem Reap is, in effect, a company town for a UNESCO World Heritage Site. Angkor was inscribed in 1992, the same year international restoration work resumed, and tourism has since remade a once-small provincial capital into Cambodia's second city by visitor numbers if not by population. Pub Street and the Old French Quarter near the river grew up almost entirely to serve that traffic, while the surrounding countryside — the floating villages of the Tonle Sap, the silk and rice-farming communities of Puok district — still runs on the rhythms that predate the tourism economy by centuries. The city's fortunes rise and fall with the temples six kilometers up the road, which is unusual for a provincial capital anywhere, and is the reason a visit here so quickly becomes a visit to two places at once: the empire's old capital, and the modern town that grew up to look after it.