🔄 Updated 21 Jun 2026
Wat Si Mongkhon Tai was founded in 1742, during the Thonburi period — older than the official founding of the town of Mukdahan itself. It received its royal land grant (wisungkhamasima) in 1788, and today it holds the status of a third-class royal temple of the ordinary type under the Maha Nikaya order. It was originally called Wat Si Mungkhun, then renamed Wat Si Mongkhon Tai to set it apart from Wat Si Mongkhon Nuea in the same sub-district. The word "Tai" (south) simply refers to its location — nothing more.
What makes this temple special is that it houses Phra Chao Ong Luang, the guardian Buddha of Mukdahan that people on both banks of the Mekong, Thai and Lao alike, have revered for generations. Many call him Phra Chao Yai Kaeo Mukdahan after the town's name. If you're visiting Mukdahan and want to pay your respects and ask for a blessing, this is the first place locals will take you.
Phra Chao Ong Luang — the Buddha that came before the city
Phra Chao Ong Luang is a brick-and-stucco Buddha in the bhumisparsha (calling the earth to witness) posture, in the Lan Xang style you find at old temples along both sides of the Mekong. The image is about 2.20 meters wide at the lap and around 3 meters tall from the base — not so large that it overwhelms you, but with the calm, weathered gravity of a genuinely ancient Buddha. It serves as the principal image inside the sim (ordination hall) of the temple.
The temple's story ties neatly into the legend of how Mukdahan got its name. As the tale goes, a hunter came across a mound with a seven-headed toddy palm and old brick rubble; digging down, he found Buddha images, and the largest was enshrined and a temple was established. The name "Mukdahan" comes from a gem found near Huai Bang Muk stream, which Chao Chantha Kinnari named Kaeo Mukdahan. Once you understand that backstory, coming to pay respects to Phra Chao Ong Luang feels like touching the very roots of the town.
Where to pay your respects
The principal image sits inside the main sim, open for visitors during temple hours. If you find the sim doors closed, it's fine to ask a monk or someone at the temple — at certain times it only opens for chanting or on important religious days.
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Phra Lup Lek and the other corners of the temple
Besides Phra Chao Ong Luang, the temple is also home to Phra Lup Lek, another old Buddha image that locals hold in high regard, set beneath a large bodhi tree in the grounds. Wander around and you'll see that this is a town-center temple that still keeps a shady, peaceful feel by the river — not a tourist temple dressed up beyond recognition.
- The sim (ordination hall) — decorated with chofa, hang hong and bai raka finials in the colorful Isan temple style, housing Phra Chao Ong Luang
- Phra Lup Lek — an old iron Buddha image under the bodhi tree; locals stop to pay respects and pray for steadiness and resolve
- The riverside temple yard — right on Samran Chai Khong Road; step out and you're at the river's edge, perfect for carrying on with a walk along the Mekong
- An old temple in the heart of town — shady and never crowded, a good spot for a quiet pause while you explore the city
Before you go — hours and dress code
- Opening hours — open during daytime like most temples, roughly 08:00–17:00. No entry fee; donate as you wish
- Dress code — this is a temple where locals genuinely come to pray, so dress modestly; avoid spaghetti straps or very short shorts when entering the sim
- Time needed — about 20–30 min to pay respects and look around the grounds; easy to combine with other spots in town
- Parking — there's space inside the temple and along the nearby road; on important religious days it gets busier than usual
The temple is on Samran Chai Khong Road in Mukdahan sub-district, Mueang Mukdahan district — a riverside neighborhood in the middle of town. It's a short distance on foot from the Indochina Market or the riverside walking street, and if you're staying at most hotels in town you can drive or walk over within a few minutes. It makes a perfect stop while you're strolling along the Mekong.
More to see nearby
Indochina Market
A riverside market in the center of town with souvenirs, food, and Lao–Vietnamese goods. Very close to the temple — you can walk straight over from here.
RiversideMukdahan Mekong Promenade
A walkway along the Mekong with views across to Savannakhet — a relaxed evening stroll that pairs perfectly with a temple visit.
In townHo Kaeo Mukdahan
A 65-meter observation tower; head up for views over the town and the Mekong in every direction. A short drive from the city center.
Want a full-day Mukdahan itinerary that combines the temples with the riverside spots?
See the Mukdahan travel guide →