The interior of the gargantuan Phaya Chalawan statue at Bueng Si Fai is designed as a multi-purpose functional space. It features a small meeting room with a capacity of approximately 25-30 people. This internal architecture reflects clever design by maximizing the utility of the statue's massive structure. In addition to meetings, the space has also been used for small exhibitions to educate visitors about the legend and the natural resources of Bueng Si Fai.