Believed to be the oldest stupa in Sri Lanka and built at the request of King Devanampiyatissa about two hundred years B.C.
The stupa is built in the shape of a bell. Its dome is 3.5 meters (11’4 inches) tall from the ground and its diameters measures 50.1 meters (164 feet).
It has been destroyed many times, but always rebuilt by different Kings throughout history. At one point, the stupa was covered by silver and gold until the Pandyans from India robbed plundered it.
Centuries later, Mahinda IV had the stupa covered in gold again but this time, the Colas, from India plundered the it again.