Prasat Pueai Noi or Phrathat Ku Thong

Prasat Pueai Noi is an 11th–12th century Khmer sandstone sanctuary in Pueai Noi district, south of Khon Kaen city, built in the transitional Baphuon-to-Angkor Wat style. Entry is free, there’s no ticket booth, and on most days you’ll have the ruins to yourself.

Weathered red sandstone blocks form the base of what was once a substantial Hindu temple complex, with carving still legible on some of the doorframes and lintels despite centuries of monsoon rain. The central tower, partially collapsed, keeps enough of its original form to show the classic corn-cob-shaped Khmer spire, and fragments of sculpture and foundation stone are scattered across the surrounding ground — evidence that this was once a larger religious compound rather than a single isolated tower. Interpretive signage on site (Thai and English) explains what’s known about the layout and the surviving reliefs.

The alternate name, Phrathat Ku Thong (“golden stupa”), reflects a later chapter: local Buddhist tradition attached itself to the site long after its Hindu-era construction, a pattern repeated at several Khmer sanctuaries across Isan where a stupa or Buddha image was added centuries after the original towers went up. It’s worth noting both names when you’re searching for the site online — some maps list it under one or the other.

The setting is rural and quiet — rice fields and village life surround the ruins, with birdsong and the occasional motorbike the only real interruption. There’s minimal shade and no food stalls on site, so this isn’t a place to linger for hours, but the lack of crowds makes it an easy, unhurried stop.

Insider Tip: Go in the early morning or the last hour before closing — the low sun rakes across the sandstone and picks out carving detail that’s washed out in the flat light of midday.

Bring water and sun protection — there’s little shade and no shop on site. If Khmer-era ruins interest you, Ku Praphachai and Ku Ban Na Kham Noi is another sanctuary in the same province worth pairing with a visit here, and the Khon Kaen destination guide covers the rest of what to see in the city and surrounding districts.