Ton Son Mosque

What it is

Ton Son Mosque is the oldest mosque in Bangkok and in Thailand, standing on the left bank of Khlong Bangkok Yai in Wat Arun subdistrict, Bangkok Yai district, on the Thonburi bank of the river. It was founded in 1688, in the reign of King Narai of Ayutthaya, by Chao Phraya Ratchawangsanseni (Mahmud), which places its founding roughly a century before Bangkok became a capital at all. Its first name was Kudi Yai, a contraction of Kudi Bangkok Yai, the great kudi at Bangkok Yai, and the building that name described was a teak house raised on a platform under terracotta tiles, laid out much like the assembly hall of a Buddhist monastery. The congregation rebuilt it in brick in the reign of King Rama II, and in 1952 replaced that in turn with the reinforced concrete building that stands today. The present name comes from the twin pine trees, ton son, planted at the gate in the reign of King Rama III. Ton Son Mosque is a Sunni congregational mosque still in daily use, with a burial ground beside it and a religious school attached, rather than a monument maintained for visitors. Nothing about it is staged, and that is the point of coming.

Checked 2026-08-25 · Source

What's inside

The 1952 prayer hall is plain from the lane and detailed inside. Its decoration carries ornate calligraphy, a representation of the Kaaba and a floor plan of the mosque at Mecca, and the artistic traditions behind that work are traced to the Thonburi kingdom under King Taksin rather than to any imported twentieth-century style. Beyond its function as a place of worship, Ton Son Mosque preserves historical artefacts belonging to the congregation, including a handwritten Quran. The second half of the site is the burial ground, which stands immediately beside the mosque and is the reason many Thai visitors come at all: it serves as the resting place of prominent Muslim leaders in Thailand, and its stones record families who have been part of this stretch of canal bank for three centuries. The compound is small. There is no exhibition hall, no captioning in English and no visitor route through the buildings, so what a visitor sees depends heavily on whether someone from the congregation is free to open a door and explain what is behind it.

Checked 2026-08-25 · Source

How long to spend

Allow forty minutes. Ton Son Mosque is a compact walled compound rather than a complex, and the prayer hall itself takes only a few minutes to look at properly once shoes are off and the light inside has been given a moment. The time goes on the cemetery, which rewards a slow circuit, and on the canal frontage. Visitors who arrive without an introduction and find the prayer hall in use will spend less; visitors who are invited in and shown the artefacts can easily spend twice that. Forty minutes is the figure to put into a day plan for the Thonburi bank, and it sits comfortably between a Khlong Bangkok Yai boat stop and whatever comes next.

Checked 2026-08-25

Season and crowds

Mid-morning on a weekday is the reliable window: the compound is awake, the congregation is not at prayer, and the canal side is still in usable light. Friday around midday is the one time to stay away unless a member of the congregation has invited you, because the mosque fills for Jumu'ah and a visitor with a camera is an intrusion at exactly the wrong moment. The five daily prayers each empty the courtyard into the hall for a short period; if the shoes are lined up at the door, wait outside. Ramadan changes the rhythm of the whole compound, with the evening far busier than the day. Because the mosque publishes no visiting hours, treating any arrival as a request rather than an entitlement is the practical approach.

Checked 2026-08-25

Tickets

There is no ticket to record for Ton Son Mosque and no admission price is published anywhere the operator controls. The mosque maintains no website, and no fee is stated for entry to the prayer hall or the burial ground. A mosque of this kind is supported by its congregation, so the honest expectation is that a visitor gives a donation if a donation box is present and gives nothing if it is not, rather than paying at a gate. What was checked in establishing this: the mosque has no site of its own, OpenStreetMap records no website and no opening hours for it, and nothing operator-published states a charge. Anything an aggregator lists as a price for this mosque was not read from the mosque.

Checked 2026-08-25

Getting there

Ton Son Mosque sits on the canal bank in Bangkok Yai, and the approach is the interesting part. The nearest rail is the MRT Blue Line at Itsaraphap station (BL32), which opened on 29 July 2019 and serves the Wat Tha Phra and Wat Arun subdistricts of Bangkok Yai, the same subdistrict the mosque stands in; from there the last stretch is on foot through residential lanes or by motorcycle taxi. The alternative, and the better one, is water: Khlong Bangkok Yai is a working canal, and arriving at the mosque from it puts the compound in the relationship to the waterway that explains why it was built here. Drivers should note that the lanes on this side are narrow and often one way, and that there is no visitor car park.

Checked 2026-08-25 · Source

What to watch out for

Dress is the first thing. Long trousers or a long skirt and covered shoulders for everyone, a headscarf for women, and shoes removed before entering the prayer hall. Do not walk in front of anyone praying and do not enter the hall at all during a prayer unless invited. The burial ground is a family cemetery in active use; walking between the stones, sitting on them or photographing a grave close up is not acceptable, and a funeral in progress means the whole compound is off limits that day. There are no published hours, no ticket desk and no guide on duty, so a visitor may find the gate shut with nobody to ask. Bring no expectation of English signage. There is no scam risk here worth naming, which is unusual for a Bangkok sight, but there is a real risk of causing offence by treating a working mosque as an attraction.

Checked 2026-08-25

Photography

Ask before the first frame and accept a refusal without argument. The exterior from the lane and from the canal is uncontroversial; the interior of the prayer hall, the artefacts and above all the cemetery are not, and permission for one does not carry to the others. People at prayer are not a subject. The best picture here is the compound in its setting rather than any detail inside it: the mosque wall, the pines at the gate and the canal in one frame, taken from the water or from the opposite bank in the second half of the morning when the light comes across rather than down. A wide lens and no flash. Tripods and anything that looks like a production set-up will end the visit.

Checked 2026-08-25

Where it is

• 30 min

  2 min walk · เขตบางกอกใหญ่

  Wat Hong Rattanaram Ratchaworawihan

  • High · Heritage site
  • Place of worship
• 30 min

  2 min walk · เขตบางกอกใหญ่

  Wat Moli Lokkayaram

  • High · Heritage site
  • Place of worship
• 30 min

  3 min walk · เขตธนบุรี

  Bang Luang Mosque

  • Must see · Heritage site
  • Place of worship

External links

• View on Wikidata