WAT UBOSOT (วัดอุโบสถ)
Wat Ubosot or the Monastery of the Ordination Hall is a restored ruin located on city
island in Pratu Chai Sub-district of Ayutthaya. The ruin is situated in the
Somdet Phra Sri
Nakharin Park, being part of the Ayutthaya Historical Park.

Wat Ubosot lies west of
Khlong Chakrai Yai, which had its mouth at the Chao Phraya
Wat Chao Phram is on its north side, while Wat Chao Prap on its south. Chedi
Yai stands west of it.

The exact date of the temple's construction and its historical information are not known.
The chedi features characteristics indicating its construction in the Middle to Late
Ayutthaya period. The chedi is redented from its platform until the harmika. The high and
redented square platform has a stairway on the south, leading to the base of the chedi.
The chedi has a triple redented square base representing the three worlds or the Trai
Phum. The three worlds are: the sensual worlds, the form world, and the formless world,
together forming the Buddhist cosmology.

An ubosot or ordination hall stood in the front of the chedi. This ubosot has been altered
in the Late Ayutthaya period. The area has been up leveled, and a new vihara has been
built on top of the foundations of the ubosot.

The whole monastic area was before completely surrounded by a moat, but can now
easily be accessed.

Wat Ubosot in indicated in a  
mid-19th century map under the denomination "Wat Bot"
as on
Phraya Boran Rachathanin's map drafted in 1926.

The ruin of Wat Ubosot is located in geographical coordinates: 14° 20' 35.03" N, 100°
33' 22.01" E.
Wat Ubosot from the east
Wat Ubosot from the south
Text, maps & photographs by Tricky Vandenberg
Updated March 2016
(Wat Ubosot from the east)
(Wat Ubosot from the south)
Detail of a 19th century map
Detail of Phraya Boran Rachathanin's map - Anno 1926
Detail of a 2007 Fine Arts Department GIS map
(Detail of a 19th century map - Courtesy of the Sam
Chao Phraya Museum - map is orientated S-N)
(Detail of Phraya Boran Rachathanin's map - Anno
(Detail of a 2007 Fine Arts Department GIS map -
Courtesy of the Fine Arts Department - 3th Region)