The Abhayagiri Monastery and the big Stupa or Dagaba was built by King Vattagamini Abhaya, He ruled Sri Lanka during the first century BC. and chose this site on his triumphant return after having had to flee from invaders. It is believed that over 5,000 monks dwelled there and it act as meditation and learning center like a university.

Event after passing thousand years , the monastery still offers a fascinating journey to ancient era. The Abhayagiri dagaba, is little over 100 metres, in height and one of the most striking attractions in Anuradhapura.
Also can visit to see stone statue of Lord Buddha seated , a cave temple, a pond cut from stone, and ancient moonstones carved from the rock at this sacred site. Abhayagiri Museum nearby displays ancient jewelry, artifacts, and pottery.