Traditions ascribe this place to Kirti Sri Rajasimha who is said to have stopped its completion as he heard of the discovery of a cave at Degaldoruwa. This building was never used as a temple though there is a small Viharaya to which offerings are made.
The lower storey of Galmaduwa is built of stone and the upper storey of brick and stone masonry in seven diminishing stages to represent a Vimana. It is 60 feet square at the base and tapering at the top and hence called a Gedige. Around this is a rectangular stone work with archers on it.