Kurunegala, the Capital of North Western Province is treasure house of archaeology, having been the seat of four Medieval Kingdoms of Sri Lanka between the mid 12th and 14th century. King Buvanekabahu 2 took advantage of the troubles in Pandyan invader from India, attacked and seized the throne from them and made Sri Lanka Independent again. He brought the Tooth Relic to Kurunagala and ruled from there.
"Ever wondered why? Sri Lanka is Unique among the other travel destinations"