Bricks can still be found over a large area, so the monastery could have contained much more structures.
Following the Fine Arts Department, the site was 8 Rai, 1 Ngan and 56 Talang Wa, which is approximately 70 acres.
Historical data about the monastery and its construction is unknown.
The site is challenging to access in the rainy season due to flooding.
The ruin of Wat Pho is in geographical coordinates: 14° 21' 49.65" N, 100° 33' 52.09" E.
Footnotes:
(1) Khlong Sra Bua, or the Lilly Pond Canal, is situated in the northern area, off the city island, in the Khlong Sra Bua District. The waterway splits from Khlong Hua Ro between Wat Ngiu (defunct) and Wat Si Liam. The canal has its mouth at the City Canal (Khlong Mueang) between Wat Na Phra Men and Wat Mai in front of the northeastern corner of the Grand Palace. The canal was a shortcut in the old Lopburi River.
(2) Thung Kaeo, or Crystal Field, is an area north of Ayutthaya bordered on the west and north by Khlong Sra Bua, on the east by Khlong Hua Ro, and on the south by Khlong Mueang.
(3) In Ayutthaya times, there were twenty-two ferry routes. In the northern area, the six other crossings were: Tha Nuea to Wat Khun Yuan, Tha Ma Ap Nam to Wat Choeng Tha, Tha Khan to Sala Trawen, Wat Tha Sai to Wat Rong Khong, Wat Song to Wat Pa Khonthi and Tha Khun Nang to Wat Mae Nang Plum.
References:
[1] Rachathanin, Phraya Boran. Athibai Phaenthi Phra Nakhon Sri Ayutthaya kap khamwinitjai khong Phraya Boran Racha Thanin. Explanation of the map of the Capital of Ayutthaya with a ruling of Phraya Boran Rachathanin - Revised 2nd edition and Geography of the Ayutthaya Kingdom. Ton Chabab print office. Nonthaburi (2007). p. 72.