The Satmahal Prasada ("seven-story tower") is a 12th century step pyramid in the northeast corner of the archaeological complex of Polonnaruwa in Sri Lanka. It is believed to be a stupa because it is in a Buddhist environment. It is unique in the area, of unknown builder and purpose. It is often compared to the stupa at Wat Kukut in Lamphun in Thailand and to the Buddhist architecture of Cambodia.
It is made of brick and a layer of plaster. It has seven floors, although the seventh only barely remains. It has a square plan, with a lateral staircase. It presents the same decoration on its four sides. On the ground floor, there is a false entrance. On the upper floors, there is a sculpture at the centre of each wall, surrounded by an arch and holes for anchoring a niche or a similar structure.
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- "Sathmahal Prasada in Sri Lanka". Retrieved 2019-04-14.
- "Pannel number 51 of the archaeological site". Retrieved 2019-04-14.
- Ciordia, José M. (2020). "The Ship in the Cave: The Greek and Nautical Origin of Buddhist Architecture". Journal of Asian Architecture and Building Engineering. 19 (1): 63. doi:10.1080/13467581.2019.1697698.