The one temple in this batch with monks in it: a third-class royal monastery southeast of the island, built around the chedi tradition says King Naresuan raised for a victory won on the back of an elephant.
วัดใหญ่ชัยมงคล · Wat Yai Chai Mongkhon Worawihan
| Official name | วัดใหญ่ชัยมงคล — Wat Yai Chai Mongkhon Worawihan |
|---|---|
| Where | Khlong Suan Phlu, Phra Nakhon Si Ayutthaya, Phra Nakhon Si Ayutthaya |
| Royal temple class | Third class royal temple, Worawihan (พระอารามหลวงชั้นตรี ชนิดวรวิหาร) The National Office of Buddhism's Ayutthaya provincial office publishes a roster of the province's royal monasteries and their abbots, dated February B.E. 2569, which lists วัดใหญ่ชัยมงคล วรวิหาร as พระอารามหลวง ชั้นตรี ชนิด วรวิหาร with an acting abbot in post. This is the first royal grade in this entire temple guide read from a National Office of Buddhism document rather than quoted from a research database — the national register at binfo.onab.go.th refused access, as it has in every previous run. |
| Monastic order | Not recorded in any register we could read. |
| Ancient monument | Carried in the national monument register; gazette announcement unread No Royal Gazette announcement naming this temple was found. The Fine Arts Department's catalogue of its own gazette announcements carries the B.E. 2478 national monument list, and academic sources apply that citation to other Ayutthaya monuments in the same batch, but nothing confirms this temple by name and the Gazette itself refused every request. The temple is carried in the department's Ayutthaya Historical Park guide under the group of monuments east of the island. |
Khlong Suan Phlu, Phra Nakhon Si Ayutthaya, Phra Nakhon Si Ayutthaya
The exact location has not been confirmed yet.
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.
The chedi's date and the duel behind it are repeated by every Thai state source without qualification, and the historicity and date of that duel are debated by historians. No government page consulted engages with that debate, which is worth knowing when you read the signboard. The one hedge any state body offers is the Tourism Authority's, on whether the chedi is new work or an enlargement of something older.
Wat Yai Chai Mongkhon stands outside the island to the southeast, and it is the only one of these six that is a living monastery rather than a monument. The National Office of Buddhism's Ayutthaya provincial office lists it as a third-class royal monastery of the Worawihan sub-rank, with an acting abbot in post as of February B.E. 2569. That single administrative line changes how the place should be read: there are monks here, there is a school of practice here, and the visitor is a guest in a working institution rather than a ticket-holder in a park.
Its older names carry its older function. The Fine Arts Department records that it was founded as Wat Pa Kaeo — the temple of the crystal forest — and that it was also called Wat Chao Phraya Thai because the head of the monastic order lived here, the Somdet Phra Wanrat who held the rank of patriarch of the right. The Tourism Authority explains why that mattered: the community here was the forest-dwelling Pa Kaeo lineage, established for monks who had come back from ordination and study in Sri Lanka, and it drew ordinands in such numbers that King U Thong raised its head to the patriarchate. Both bodies attribute the founding to Ramathibodi I in B.E. 1900, and both mark the attribution as chronicle or legend rather than as fact.
The great chedi is why anyone comes. Tradition, repeated by the Fine Arts Department and the Tourism Authority alike, holds that King Naresuan raised it in B.E. 2135 on the advice of the Somdet Phra Wanrat of this temple, to mark his victory over the Burmese crown prince in single combat on elephant-back at Nong Sarai in Suphan Buri, and named it Phra Chedi Chai Mongkhon — the chedi of auspicious victory. Over time the local name for it, the great chedi, became the name of the temple. The Tourism Authority is the only state source that stops to say what is not known: whether the chedi was built new or raised over one already standing there is not clearly evidenced. The Fine Arts Department's records show it was conserved in a project of the late 1970s, and describe it as larger than any other chedi in Ayutthaya without giving a figure for its height.
The plan of the temple is early-Ayutthaya and the Fine Arts Department says so explicitly: a large circular principal chedi on a circumambulatory platform, a cloister around it, an ordination hall to the east and a vihara to the west, in the same arrangement as Wat Mahathat, Wat Phra Ram and Wat Ratchaburana on the island. To that the Tourism Authority adds a vihara of the reclining Buddha, built in Naresuan's reign for veneration and for meditation practice, and — in the modern period — a residence hall and a royal monument to Naresuan built on the grounds. The temple was abandoned at the last fall of the city and later re-established with monks in residence, which is the state it is in today.
The great chedi, circular and standing on a raised circumambulatory platform, which the Fine Arts Department describes as larger than any other chedi in Ayutthaya. It gives no measurement, and neither does any other state source we could reach, so no height figure appears on this page.
The cloister running around the chedi, and the ordination hall to the east and vihara to the west of it, in the early-Ayutthaya layout the Fine Arts Department compares directly to Wat Mahathat, Wat Phra Ram and Wat Ratchaburana.
The vihara of the reclining Buddha, which the Tourism Authority says was built in the reign of King Naresuan as a place of veneration and of meditation practice.
The modern royal monument to King Naresuan and the residence hall raised in his honour on the grounds — twentieth-century additions to a fourteenth-century foundation, and part of why the temple is busy on weekends.
Monks. This is a functioning monastery, which none of the other five in this batch is.
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.
| Hours | Daily 08:00–17:00, per the Tourism Authority of Thailand's Thai-language listing. |
|---|---|
| Admission | Not established from an official source. |
| Dress | Not established from an official source. |
| Photography | No source we found states a rule, so we print none. |
| Getting there | Southeast of the island in Khlong Suan Phlu subdistrict, about three kilometres from the historical park. The temple answers on 0 3524 2640. There is parking. |
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.
Yes, and it is the only one of the six Ayutthaya temples in this guide that is. The National Office of Buddhism's Ayutthaya provincial office lists it in its February B.E. 2569 roster as a third-class royal monastery of the Worawihan sub-rank, with an acting abbot in post. The temple was abandoned after the last fall of the city and later re-established with monks in residence. Dress and behave accordingly; it is not a ruin you are visiting but a monastery you are being allowed into.
That is the tradition, and every Thai state source repeats it: that in B.E. 2135, on the advice of the Somdet Phra Wanrat of this temple, King Naresuan raised the chedi to mark his victory over the Burmese crown prince in single combat on elephant-back at Nong Sarai in Suphan Buri. The Tourism Authority adds the one honest qualification any of them makes — whether the chedi was built new or raised over an older one already standing is not clearly evidenced. The date and even the historicity of the duel itself are debated by historians, and no government page consulted engages with that debate.
That was its original name. The Fine Arts Department records that the temple was established as Wat Pa Kaeo, the temple of the crystal forest, and the Tourism Authority explains that it housed the forest-dwelling Pa Kaeo lineage — monks who had returned from ordination and study in Sri Lanka. It was also called Wat Chao Phraya Thai because the head of the monastic order lived here. The present name came later, from the great chedi that locals simply called the big one.
No official source says, which is unusual and worth stating plainly. This temple is not one of the six monuments covered by the Ayutthaya Historical Park's combined ticket, so the park's published rates do not apply to it, and the Tourism Authority's listing for it gives opening hours of 08:00 to 17:00 but no fee. The figures circulating unofficially run from nothing to 150 baht, which is reason enough to trust none of them. Bring small notes.
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 Phra Nakhon Si Ayutthaya’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.
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.