The large throne hall stands on a 50 cm high base, the roof is covered in green and orange tiles. The pediment is decorated with a mural depicting the Hindu god Indra. The main central door is reserved for use by royalty, while others must enter through the adjacent side doors. Within the hall there are two rows of square columns, five on the left and six on the right, adorned with Thai floral designs. The coffered ceiling is decorated with glass mosaic stars.
At the back of the hall is the Bussabok Mala Maha Chakraphat Phiman Throne (พระที่นั่งบุษบกมาลามหาจักรพรรดิพิมาน; rtgs: Butsabok Mala Maha Chakkraphat Phiman), flanked by two gilded seven tiered umbrellas. The throne is shaped like a boat with a spired pavilion in the middle. This elevated pavilion represents Mount Meru, the centre of Buddhist and Hindu cosmology.[30] The throne is decorated with coloured enamels and stones as well as deva and garuda figures. The throne was once used for giving royal audiences.