Chaiyaphum · Phu Khiao

Wat Phra That Nong Sam Muen

The most complete ancient monument in Chaiyaphum: a redented brick chedi on the site of a Dvaravati town, mixing Ayutthaya, Lan Na and Lan Xang forms, protected by a Royal Gazette instrument of 1936 and given a mapped boundary only in 1982.

วัดพระธาตุหนองสามหมื่น · Wat Phra That Nong Sam Muen

By the BAANLYY Editorial Team · Last checked 27 September 2026

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The record

What the official record says

Official nameวัดพระธาตุหนองสามหมื่น — Wat Phra That Nong Sam Muen
WhereBan Kaeng, Phu Khiao, Chaiyaphum
Royal temple classNot established from an official register.
Monastic orderNot recorded in any register we could read.
Ancient monumentRegistered national ancient monument
Royal Gazette vol. 53, part 24, from p. 901, 2 August B.E. 2479 — ประกาศกรมศิลปากร กำหนดจำนวนโบราณสถานสำหรับชาติ, item 22 of the Chaiyaphum list as ธาตุบ้านแก้ง, อำเภอภูเขียว ตำบลบ้านแก้ง, signed 13 July B.E. 2479. Land boundary: vol. 99, part 130, 14 September B.E. 2525, signed 14 July B.E. 2525, approximately 5 rai 3 ngan 79 square wa.
Both instruments were read from the Royal Gazette's own scans on 27 September 2026 rather than cited from an index, which is new in this guide. The 1982 boundary announcement is worth quoting for its opening: it recites that the department had registered the monument by the 1936 announcement WITHOUT determining a land boundary, and then determines one under section 7 of the Ancient Monuments Act B.E. 2504. So the monument stood under state protection for forty-six years with no mapped extent. The department's register carries it at the status meaning registered and bounded, monument 0002226. One caution on the 1936 scan: the year digits in the 1982 text are imperfectly rendered by machine reading, and the 1936 announcement itself is what dates the list.
Coordinates16.378736, 102.042538
Fine Arts Department national monument register, the department's own registered point for monument 0002226, read from its province service on 27 September 2026. It falls in Tambon Ban Kaeng, Phu Khiao, which is the subdistrict both the register and the 1936 gazette instrument state. The Sirindhorn Anthropology Centre independently gives 16.378267, 102.042555 for the centre of the monument, about fifty metres away, which is a second body agreeing rather than a conflict.
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Founding

When was it founded — and what actually establishes that?

Thai temple histories mix two different kinds of statement, and this guide keeps them apart. What a register, a gazette entry, an inscription or a dated royal act shows is one thing. What the chronicles and the temple itself hold is another, and it is worth telling as what it is.

What the record showsNo document establishes when it was built. The Princess Maha Chakri Sirindhorn Anthropology Centre's architectural entry states that no evidence of construction is apparent and attributes it on style to the late 21st or early 22nd Buddhist century, with the part above the reliquary body possibly restored in the 24th. The Royal Gazette's registration list of 1936 is the oldest document that names it, and the boundary announcement of 1982 the oldest that measures it.
What tradition holdsOne chronicle account holds that the That was raised by Phra Sang Thong as a memorial, to hold the ashes and the valuables of his grandparents, and that he built other That besides; a large bell is said to have hung from the finial. The Provincial Office of Buddhism adds a second attribution, to the reign of King Setthathirath of the Lao kingdom, which it gives as a supposition without naming a document.

The two attributions are close in date and neither rests on a text. The stylistic reading is the stronger of them because it is argued from the building: the center's entry identifies an Ayutthaya element, a Lan Na element and a Lan Xang element in the fabric, which is why it can be placed in a period at all. The Setthathirath attribution is what a state office prints, not what an instrument proves, and it is given here as such.

History

The history of Wat Phra That Nong Sam Muen

Wat Phra That Nong Sam Muen stands at Mu 1, Ban Kaeng, in Phu Khiao district, about eighty kilometers from the provincial town. The Provincial Office of Buddhism records it as a monastery of the ordinary kind rather than a royal one, and gives the route in detail: Highway 201 north past Phu Khiao as far as Ban Nong Song Hong, then left onto Highway 2055 for nine kilometers to Ban Kaeng, then left again for about five kilometers. The name comes from the marsh that lies away to the north-west of the compound, not from the monastery.

The chedi is the reason to come, and it is a genuinely unusual object. The Sirindhorn Anthropology Centre's entry reads it as a redented plan rising through a circumambulation molding, two lion-footed bases and a lotus base with a single ridge molding, to a reliquary body decorated with the upper and lower sheath motifs of northern work and carrying Buddha images in niches. Above that a sloping roof, then a story that repeats the reliquary body in miniature, then a small prasat or arch-top over each of the four roof faces, and at the top a square bell form. The center's own summary is that this is a chedi in which several art traditions are combined, and it names them: the lion-footed base is Ayutthaya, the sloping roof and the repeated body and sheath decoration are Lan Na, and the miniature prasat and the squared bell are Lan Xang. The Provincial Office of Buddhism describes the same monument in plainer terms, with stairs on all four sides, niches holding images in the contemplating and the walking attitudes, and relics of the Buddha within.

Under and around the monastery is something older. The Provincial Office of Buddhism records that this was a large town of the Dvaravati period, roughly the 12th to 16th Buddhist centuries, and that the traces are still legible as a moat, an earthen rampart and a scatter of mounds. Objects found inside and outside the moat were brought into the monastery: a group of sandstone boundary stones, some of them inscribed in Pallava script in Sanskrit and dated by the office to the 12th to 14th Buddhist centuries, and two damaged pieces of sculpture, one of which resembles the head of a Buddha under a naga hood in the Khmer Bayon manner of the 18th Buddhist century. One of the boundary stones was taken away to serve as the district pillar of Phu Khiao, which is an unusually direct piece of reuse to be able to document.

The conservation record is the part that most sources get muddled, and it has two distinct campaigns. The Sirindhorn Anthropology Centre states that the monument was excavated and restored between B.E. 2531 and B.E. 2533. The Fine Arts Department's Regional Office 10 records a second and later restoration completed in B.E. 2558, and then an inspection on 12 February B.E. 2567 specifically to check whether the That was still settling out of true, which found that it was not. A monument with a documented lean, a documented repair and a documented follow-up inspection is a better-served monument than most in this province, and the reason it is the most complete one here.

On site

What you actually see

The chedi itself: a redented brick and stucco form on a square base, with the two lion-footed bases and the lotus molding the Sirindhorn Anthropology Centre describes, and stairs on all four sides.

The reliquary body with its upper and lower sheath decoration — a northern motif this far into the north-east — and the Buddha images set into its niches.

The stacked upper story that repeats the reliquary body in miniature, with a small prasat or arch-top over each of the four roof faces and a squared bell form at the summit: the Lan Xang half of the building.

The sandstone boundary stones kept at the monastery, brought in from the surrounding town site, some carrying Pallava-script inscriptions in Sanskrit.

The two damaged pieces of sculpture the Provincial Office of Buddhism records, one of them close to a Buddha head under a naga hood in the Khmer Bayon manner.

The moat and earthen rampart of the Dvaravati town, still readable in the ground around the compound, and the mounds inside it.

The marsh away to the north-west that the monument is named after, which is not in the compound and is easy to miss.

Visiting

Visiting: hours, admission, dress and photography

This is a working place of worship for millions of people rather than an attraction, and it is treated as one at the gate. Where a figure below is blank, no source we are prepared to cite states it.

HoursNot established from an official source.
AdmissionNot established from an official source.
DressA working monastery as well as a registered monument. Cover shoulders and knees, and remove shoes before entering any building.
PhotographyNo source we found states a rule, so we print none.
Getting thereMu 1, Tambon Ban Kaeng, Phu Khiao, Chaiyaphum. The Provincial Office of Buddhism gives the route as Highway 201 from Chaiyaphum past Phu Khiao to Ban Nong Song Hong, about 80 kilometers, then left onto Highway 2055 for 9 kilometers to Ban Kaeng, then left for about 5 kilometers.
Before you rely on the figures aboveNo official source read for this page publishes opening hours or an admission figure for this monument, so both are left unconfirmed here rather than copied from a travel site. The monument stands in an open compound at a working monastery of the ordinary kind, which is normally reachable through daylight hours.
Open

What we could not establish

Every temple reference repeats claims nobody has checked. These are the ones we went looking for and could not stand up, listed so you know exactly where this page stops.

FAQ

Wat Phra That Nong Sam Muen: common questions

Why does this chedi look like three different buildings at once?

Because it is. The Sirindhorn Anthropology Centre's entry names the elements separately: the lion-footed base belongs to Ayutthaya work, the sloping roof and the repeated reliquary body and the sheath decoration to Lan Na, and the miniature prasat over each roof face and the squared bell at the top to Lan Xang. The center's own summary of the monument is that it combines several traditions.

When was it built?

No document says. The Sirindhorn Anthropology Centre attributes it on style to the late 21st or early 22nd Buddhist century and the Provincial Office of Buddhism suggests the reign of King Setthathirath, but neither names a text. What is documented is the protection: a Royal Gazette instrument of 2 August B.E. 2479 and a land boundary of 14 September B.E. 2525.

Is there anything here older than the chedi?

Yes, and by a long way. The Provincial Office of Buddhism records a Dvaravati town on this site of roughly the 12th to 16th Buddhist centuries, with its moat and rampart still visible, and boundary stones from it kept at the monastery, some inscribed in Pallava script in Sanskrit.

Is the That leaning?

It has been. The Fine Arts Department's Regional Office 10 inspected it on 12 February B.E. 2567 specifically to measure whether it was settling further after the restoration completed in B.E. 2558, and recorded that it was not.

How tall is it?

The Provincial Office of Buddhism gives about 45 meters. No other state source consulted publishes a height, so the figure is attributed here rather than stated flatly.

What are the opening hours?

No official source read for this page publishes them. Rather than copy a time from a travel site the hours are left unconfirmed; a working monastery of this kind is normally open through daylight.

Nearby

Where to go from here

Before you go, read the guide to Buddhism and temple etiquette in Thailand — dress, footwear, where photography is not welcome and how to behave around monks. The rest of Chaiyaphum’s temples are covered here too.

Every temple here sits in a place worth reading about on its own terms. The nationwide temple guide covers the other provinces to the same documentary standard as this page, and says on each one what the record establishes and what it does not.

If you are thinking about more than a visit: work out which Thai visa route fits your situation, and see what is available to rent and buy in residences across Thailand.

Sources & References

Sources & References

Last checked 27 September 2026

Every fact on this page is drawn from the sources above. Where they disagree, this page says so rather than choosing silently. Registrations, fees, hours and access change; confirm anything you are relying on with the authority concerned. BAANLYY LLC is a Nevada company and a listing portal, does not represent any temple, and offers no legal or religious advice.