What once was: Tracing the ancient Empire of the Khmers

Prasat Hin Khao Phanom Rung in eastern Thailand is perched on an extinct volcano. — Photos: DAVID BOWDEN

The Khmer Empire was one of the most powerful in the region from the ninth to early 15th centuries. At its peak, it extended over much of what is now Thailand, Cambodia, Laos (Lao PDR), and southern Vietnam.

There are now numerous sites in these countries where budding Indiana Jones archaeologists can admire the architectural masterpieces of the former empire. This legacy of well-preserved archaeological sites and others in ruin still attract millions of curious tourists annually.