King Rama I built the Dusi Maha Prasat as the replacement
for earlier wooden Phra Thinang Amarintharapisek Maha
Prasat, which burned down in 1790.
King Rama I intended that the present building be used for
his own Lying-in-State, as it has the same height and
dimensions as Phra Thinang Suriyamarin Ayutthaya, the
customary Hall for Lying-in-State of Ayutthaya Kings.
Thus the principle function of Dusit Maha Prasat has been
and still is the hall for Lying-in-State of Kings, queens
and honored members of the royal family.
This hall is also used for the annual Consecration Day
Ceremony (Phra Ratcha Phithi Chat Mongkhon).
It houses many important objects.