Wat Khok Khamin or the "Monastery of the Curcuma Plant" was situated on the city island in the central area of Ayutthaya at Pratu Chai sub-district. The temple was located near the crossing of Khlong Pak Tho - Khlong Chakrai Yai (at present called Khlong Tho) and Lao Street. At the crossing stood Saphan Lam Hoei, a brick bridge.
Opposite Khlong Chakrai Yai stood Wat Jan (brick foundations visible), while Wat Khun Phrom (no traces anymore) was on its south.
The ancient site was cleared in the early 1970's during construction works of an expansion project of the (former) Ayutthaya Agriculture School (Withayalai Kasetrakam). There are no traces of foundations or brick work anymore at ground level and the temple is classified as disappeared. [1]
The site is mentioned on Phraya Boran Rachathanin's map drafted in 1926. Historical data about the monastery and its construction is unknown.
References:
[1] Bangkok Post - 09 Dec 1972 - Work suspended on Ayutthaya sites. The article states that “machinery engaged on the Ayutthaya Agriculture School extensions ploughed up the ruins of at least five temples in the disputed area”. The work at the school was stopped after students had sent a petition to the NEC. The Director General of the Fine Arts Department at that time stated he was certain the damage had already been done.