Avissawella, is a big town in Sri Lanka, governed by an Urban Council, situated on the A4 route from Colombo to Ratnapura, Colombo District, Western Province, Sri Lanka, approximately 59km east of capital Colombo. It is also known as Seethawakapura.
It is on the periphery of the Western Province on its border with the Sabaragamuwa Province. This town has a rich and proud history in the annals of its military exploits against the Portuguese invaders as it was the capital of Sitawaka Kingdom from 1521 to 1593. Seethawaka was ruled by King Mayadunne and later his son Rajasinghe the First during this period. There is a lore that Rajasinghe was a parricide but some historians discount this as a story spread by jealousy. Avissawella is the junction from where the oldest land route to the Hill Country via Hatton and the road down South via Ratnapura diverge. The town is governed by an Urban Council named the Seethawakapura Urban Council.
During the past, this area was known as Seethawaka and this name is used to identify a section of this town to this day. There are folklore which relate this name to ""Seetha Devi"" of Ramayanaya fame. Seethawaka legend has become richer because of these stories.