Prang Ku

One sandstone-and-laterite tower, not the three-tower complex some listings describe, is what survives at Prang Ku in Chaiyaphum — the single-tower detail matters because a much larger, three-tower Prang Ku in Si Sa Ket province dominates search results for the name and gets confused with this site constantly. This Prang Ku sits in Nai Mueang subdistrict, Mueang Chaiyaphum district, a short drive east of Chaiyaphum town, and it’s free to enter, open daily 08:30–16:30.

Fine Arts Department research identifies the site as an arogayasala, a hospital chapel, one of more than a hundred King Jayavarman VII commissioned across the Khmer empire in the late 12th or early 13th century. The layout follows that standard plan: a single east-facing tower with 12 recessed corners, a gopura (gateway) with side chambers, a bannalai (library building) to the south, and a laterite-lined pond outside the enclosure to the northeast. The tower’s lintel and pediment carvings include a meditative Buddha figure worked into the stone by the original Khmer builders. Inside sits a separate Buddha image in the Dvaravati style, likely 8th or 9th century — older than the tower itself, but installed here relatively recently rather than part of the original construction.

Insider Tip: Chaiyaphum runs a multi-day festival centred on Prang Ku most years — check locally for dates if you want to see the site with crowds and ceremony rather than the usual quiet ruin.

Restoration has used the anastylosis method (reassembling original stones rather than rebuilding from new material), though the enclosure wall is noticeably shorter than it would originally have been due to missing laterite blocks, and some replacement sandstone has been used where the original material was lost. The site is managed by the Fine Arts Department’s Regional Office 12 in Nakhon Ratchasima. It’s an easy stop combined with Bai Sema Ban Kut Ngong or the Chaopho Phraya Lae Shrine, both also in Mueang Chaiyaphum district — see the Chaiyaphum hub for the rest of the province. Getting here means a car or motorbike; public transport doesn’t run this route.