Nakhon Phanom is a long, thin province on the Thai bank of the Mekong opposite Laos, and it is organised around one building. Phra That Phanom holds what Buddhists of both banks hold to be the Buddha's breastbone relic, and every other stupa in this guide's Nakhon Phanom set is described by the state's own record as a copy of it. That is not a figure of speech: the Fine Arts Department register and the Tourism Authority of Thailand both say so, temple by temple, in those words.
The province also has a framework of its own that is worth knowing before you visit, because it is how local people organise the same six buildings. Each of the province's principal stupas is the พระธาตุประจำวันเกิด, the stupa of a day of the week, and people make the round of them by birthday: Phra That Phanom is Sunday, Phra That Renu is Monday, Phra That Si Khun is Tuesday, Phra That Prasit is Thursday, Phra That Tha Uthen is Friday and Phra That Nakhon is Saturday. The attributions are published by the Tourism Authority on each stupa's own page, and the Authority runs a Songkran event around the circuit. Six of the days are below. The Wednesday stupa, Phra That Maha Chai, and the Wednesday-evening one at Mruk Khanakhon are not in this run, and Phra That Maha Chai is not in the Fine Arts Department's monument register at all.
The record here is thinner than in the central provinces and this guide says so rather than compensating. Of the six, two are registered ancient monuments with land boundaries fixed in the Royal Gazette — Phra That Phanom and Phra That Tha Uthen. Two are merely NAMED in departmental lists made under the State Administration Act, which protects them without registering them: Wat That Prasit since June 2023, and Phra That Nakhon since 11 May 2026, four months before this page was written. The remaining two, Phra That Renu and Wat That Si Khun, sit in the department's register with no registration status and no gazette instrument attached to them at all. Four instruments were downloaded from the department's mirror and read as text in this run, one of them recovered by optical character recognition after its embedded text turned out to be in a broken font encoding.
A method note that changes what this guide can assert, and that applies everywhere, not only here. The Fine Arts Department's service exposes a third operation nobody in this project had opened: QueryArcheologicalImporance — misspelled at the department's end, which is why probing for the correct spelling returns nothing. It carries the department's own written history and its own written architectural description for each monument, and the fields that say whether the department surveyed the site or copied an outside account. Those fields were checked on all six temples here and every one of them is empty, so nothing below is the department passing on somebody else's reading.
On dates, the honest summary is that one of these six has a firm one, one has a firm one for its rebuilding, and the other four do not. Phra That Tha Uthen was begun on a Tuesday, the twelfth waxing day of the third month in the year of the pig, which the department equates to 30 January B.E. 2454, and finished in B.E. 2459; both state bodies agree. Phra That Phanom fell at 19.38 on 11 August 1975 and was rebuilt by 1979. For the founding of Phra That Phanom itself the department states flatly that no documentary evidence survives, and offers the Urangkhathat chronicle in its place — which is chronicle, and is kept on that side of the line here. Wat That Prasit's three restoration dates are given by the department under its own qualifier that this is what the account says. Wat That Si Khun's history field is empty. Wat Mahathat's history field and description field are both empty.
The state contradicts itself in four places in this province and all four are printed below rather than averaged. The Fine Arts Department's structured age field for Phra That Phanom says the thirteenth to fifteenth Buddhist centuries where the department's own prose says the twelfth to fourteenth. The Tourism Authority dates the completion of the rebuilt Phra That Phanom to 29 March B.E. 2522 where the That Phanom municipality says 23 March. The department dates Phra That Renu's consecration to B.E. 2463 and names its builder Upacha In where the Authority gives B.E. 2461 and Phra Upacha In Phumiyo. And for Wat That Prasit the department gives restorations in B.E. 2112, 2283 and 2436 where the Authority gives one, in B.E. 2376, that appears on neither of the department's lists.
Two absences are worth stating at the top because they shape everything below. First, the National Office of Buddhism publishes nothing usable for this province: its national temple registry refused every request made in this run from both a browser and a server, and its Nakhon Phanom provincial office's important-temples section is still the unfilled template, every row reading (ตัวอย่างข้อมูล). So no temple here carries a sect, and the royal grade of Phra That Phanom rests on the That Phanom municipality's own page rather than on the register of grades. Second, opening hours were recoverable for none of the six. Every one has a Tourism Authority page; every one of those pages carries the site's live open-or-closed widget with no times in it, and no times in its prose body either. Nothing has been copied from a travel site, and no admission figure is published by any state source read in this run for any of the six.
One last thing, and it is the sort of claim a reader should be able to check. Thailand has had "Phra That Phanom, its related historic buildings and associated landscape" on its UNESCO World Heritage Tentative List since 2 February 2017, under reference 6183. It is not inscribed. A tentative list is a state's own inventory of what it may nominate later, and this guide does not call anything on one a World Heritage Site.
6 of 6 temples in Nakhon Phanom are plotted.
Every page is built from the National Office of Buddhism and Department of Religious Affairs registers, the Fine Arts Department’s national monument register and its published monographs, the Royal Gazette where it could be read, UNESCO, and the temples’ own material — with the Tourism Authority of Thailand used only for visiting practicalities, never for history. Nothing here is taken from a travel blog, a listicle or a review site.
The rule that governs every page is that recorded tradition is not history. Thai temple histories are full of foundation legends, and they are worth telling — but told as tradition, in those words, never flattened into a bare founding date. Where a date is not established, the page says so, and that sentence is the useful part.
Still to come here: The queue named Nakhon Phanom with one temple, Phra That Phanom, and six shipped, so the province is complete as the queue defines it and the queue advances to Surat Thani. A second Nakhon Phanom run has an obvious shape, because the birthday circuit this run built six-sevenths of is missing its Wednesday: **Phra That Maha Chai** at Ban Mahachai in Amphoe Pla Pak is the Wednesday stupa, it is named as such on the Tourism Authority's own pages, and it is NOT in the Fine Arts Department's monument register — Amphoe Pla Pak has no entry in that register at all — so it would be the first temple in this guide built without a register id, and the page would have to say so. **Phra That Mruk Khanakhon** at Tambon Don Nang Hong, Amphoe That Phanom, is the Wednesday-evening stupa and has both a Tourism Authority page and a register entry (วัดมรุกขนคร, 0003500). After those two, the strongest candidate in the province is **Wat Okat Si Bua Ban** (0003432, Tambon Nai Mueang) — item ๑๒ of the same list of 11 May B.E. 2569 that named Phra That Nakhon, read firsthand in this run and held only because six is the run size; it is the town's other principal temple and holds the images Phra Tio and Phra Thiam. Then, all confirmed in the register in this run and none of them built: **วัดหัวเวียงรังษี** (0003498) and **วัดพุทธสีมา** (0003504) in Amphoe That Phanom and **วัดจอมแจ้งบ้านพุ่มแก** (0003515) in Amphoe Na Kae, which are three of the ten items in the list of 23 June B.E. 2566 read as text here; **สิม (อุโบสถ) และใบเสมา วัดศิลามงคล** (0003499) in Tambon Phra Klang Thung, a sim with its boundary stones carried as a single monument, which is the closest thing in this province to the sema-stone material inscribed at Phu Phrabat; and **วัดกลางเมืองไชยบุรี** (0003495) and **วัดใต้เมืองไชยบุรี** (0003493) in Amphoe Tha Uthen, which are items 2 and 3 of the Nakhon Phanom block in the national list of 8 March B.E. 2478 and are therefore among the oldest registrations in the province, alongside Phra That Phanom itself. Four research jobs are left open. First, the National Office of Buddhism's national temple registry at binfo.onab.go.th refused every request in this run, from the sandbox and from a real browser; it is the register of royal grades and of sect, and getting past it would put a sect on all six of these temples and settle the grade of Phra That Phanom properly. Second, no gazette instrument was found for the elevation of Phra That Phanom to a royal monastery of the first class in B.E. 2485, and the Royal Gazette's own search interface was reachable but its keyword parameter did not apply from a URL; driving that search form is the next step. Third, the register service truncates its history and description fields at one thousand characters and the description of Phra That Phanom and of the preaching hall at Wat That Si Khun are both cut off mid-sentence there; the department's printed monument volumes would carry the full text. Fourth, the section number printed beside จังหวัดนครพนม in the national list of 8 March B.E. 2478 could not be read reliably at two resolutions and the reading obtained cannot be reconciled with the section number this guide recorded for Phetchaburi from the same issue — one of the two is wrong and a cleaner scan of that page would say which.
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