Mahinda's sister Theri Sangamitta carried a off shoot of the the ', the holy Bo tree that gave shelter to Buddha to attain Nibbana. Sri Maha Bodhi' The Bo tree was planted at

Abhayagiri is the largest monastery complex in the
Covering an area of 200ha the monastery include full components of a Buddhist temple as well as other buildings. The stupa at Abhayagiri is 108m tall and one of the tallest brick buildings of the ancient world.

Isurumuniya temple built in the 3rd century B.C. is noted for its rock carvings. The best known among these is the "Lovers". Many a poet and song writer has taken inspiration from this carving to write their masterpieces. It is believed that the carving may represent Saliya the son of the great king Dutugamunu and the low-caste maiden whom he loved.

The 13 meter high statue carved out of solid granite, goes back to the 5th century, to the reign of King Dathusena. (about 50km south of
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Although according to historical records the city was founded in the 5th century BC, the archaeological data put the date as far back as the 10th century BC[citation needed]. Very little evidence was available about the period before the 5th century BC (i.e. the protohistoric period), though excavations have revealed information about the earlier inhabitants of the city.
Further excavations in
Lower Early Historic period
The Lower Early Historic period, spanning from 500 to 250 BC, is studied on the lines of the chronicles. During this time King Pandukabhaya formally planned the city, with gates, quarters for traders etc. The city at the time would have covered an area of 1 square kilometre which makes it one of the largest in the continent at the time.