Situated between Ruwanveliseya and Jaya Sri Mahabodiya in the Ancient city of Anuradhapura It is also known as the Brazen Palace or Lohaprasadaya. In ancient times the building included the refectory and the uposathagara. (Uposatha house). There was also a simamlake where the sangha assembled on poya days to recite the formula of the confessional. The famous Lohapraseade built by King Dutugamunu described as an edifice of nine storeys, was a building of this class.
One side of the building was 400 ft (120 m) in length. As the roof was covered with tiles made of bronze, this was known as the Brazen Palace. There are 40 rows, each row consisting of 40 stone pillars and a total of 1600 stone pillars were used for the building. It is believed that it took 6 years for the construction of the building and the plan was brought from the heavens. The building was completely destroyed during the reign of King Saddhatissa.