The Anuradhapura period was a period in the history of Sri Lanka of the Anuradhapura Kingdom from 377 BCE to 1017 CE. The period begins when Pandukabhaya, King of Upatissa Nuwara moved the administration to Anuradhapura, becoming the kingdom's first monarch. Anuradhapura is heralded as an ancient cosmopolitan citadel with diverse populations.