Pom Phet

Pom Phet or the Diamond Fortress was one of the sixteen fortresses along the city walls of Ayutthaya. Situated in the southeast, at the confluence of the Pa Sak River and the Chao Phraya River in Bang Kaja area and on the east bank of the Nai Kai canal, Pom Phet was the most important fortress, protecting the harbour where foreign ships were forced to anchor for inspection and unloading. No foreign ships travelling up the Chao Phraya River before were allowed beyond this point. Pom Phet is the one of the two remnants of old fortresses and now a public park. The site has been recently renovated, since serious damage occurred from water erosion to the river banks. The brick walls of Pom Phet were built around 1580. Archaeological evidence suggests that the original walls were 6.5 meters thick. On the ground floor of Pom Phet there were eight cannons and another eight between the crenulations on top.

Ayutthaya Historical Research