Wat Photharam or the "Monastery of the Bodhi Tree" was located off Ayutthaya's city island in the eastern area in Phai Ling sub-district, east of the Pa Sak River today
There are no visible traces of this monastery remaining at ground level. Its period of construction is unknown.
This monastery is mentioned in the Royal Chronicles of Ayutthaya as being the site where the King of Prae and the left wing of the army of Hongsawadi, set up its stockade during the investment of Ayutthaya in 1549. The Mon armies were set up in a circle around the capital. In only one day they finished making a network of bridges of bamboo slats sewn with rattan across all the rivers, streams and canals so that the troops and horses could walk anywhere. 
Wat Photharam stood probably in the vicinity of a royal pavilion (tamnak), which was located along Khlong Ban Bat. At the final days of Ayutthaya the pavilion was habited by Princess Rasami Sri Suriyawong Phong Kasatri, a daughter of King Borommakot. During excavations on the site a shattered stone tablet was found. The damaged engravings recounted that this monastery was called before Wat Phet and became ruined. The monastery was renovated and its name changed into wat Photharam by Princess Rasami. It is therefore deducted that this monastery should have been situated in the vicinity of the lodging of the princess. The lodgings of Princess Rasami became also a safe haven for ex-King Uthumphon (r. 1758) after the Burmese attack in 1760. 
 The Royal Chronicles of Ayutthaya - Richard D. Cushman (2006) - page 47 / Source: Phan Canthanumat, British Museum, Reverend Phonnarat, Phra Cakkraphatdiphong & Royal Autograph.  Phraya Boran Rachathanin - Tamnan Krung Kao (1907) - pages 82-3.
(Former location of Wat Photharam)
Text & photograph by Tricky Vandenberg - November 2009 Update April 2013