Group of buildings in Chanhrakasem Palace. The concept of the Front Palace gained prominence during King Maha Thammarajathirat's reign (1569-1590) when he built a residence for his son Naresuan The Great's visits to Ayutthaya. This residence became known as Chantharakasem Palace, but was also referred to as Front Palace, and this is the first time we hear the expression "Wang Na." Therefore, Chantharakasem Palace was considered the Front Palace of the Ayutthaya Period.