Chedi or stupa is bell-shaped towers that contain the artifacts of the Buddha, or they have the remains of important monks or kings. Wat Yai Chai Mongkon is an example of such a bell-shaped chedi. It can also take the form of pagoda.
The large chedi of Wat Yai Chai Mongkon built 1592nd Ayuttaya King Nareusan the Great, who built it. But this temple already existed during the reign of King Ramathibodi in 1357 and was as a place for meditation for monks.
WhenBurmese took over Ayutthaya, destroyed the small but chedi Wat Yai Chai Mongkon was too large to be destroyed, and survived the attack. A new Ubosot was at the site of the old Ubosot, built set on fire by the attackers.
Ubosot Hall is an important place in the ceremonies. It may not always accessible to the public. The Ubosot was an altar with one or several Buddha statues.
The large chedi of Wat Yai Chai Mongkon now has lined up the modern images of Buddha in the innerYard. There are wonderful views of Ayuthhaya landscape that you see when you climb the base of the bell-shaped chedi .. It is a reclining Buddha, the king built Nareusan, for the purpose of meditation.
The temple has now been converted into a museum in honor of King Nareusan. A modern wiharn is built behind the Chedi. A wiharn is a place that houses Buddha images, where people pray for peace.