The Anuradhapura Period refers to a significant era in Sri Lankan history, lasting from the 4th century BCE to the 11th century CE. This period is marked by the establishment of the city of Anuradhapura as the capital, which became a center for political and religious activities. The era is known for its advanced urban planning, irrigation systems, and the construction of monumental structures, including stupas and monasteries. During the Anuradhapura Period, Buddhism flourished, largely due to the influence of King Devanampiya Tissa, who embraced the religion after the arrival of Mahinda Thera, the son of Indian Emperor Ashoka. The period saw the construction of significant religious sites, such as the Sri Maha Bodhi, a sacred fig tree believed to be a sapling from the original tree under which the Buddha attained enlightenment.