Buddhaghosa was a 5th-century Indian Theravada Buddhist commentator, translator and philosopher. He worked in the Great Monastery (Mahāvihāra) at Anurādhapura, Sri Lanka and saw himself as being part of the Vibhajjavāda school and in the lineage of the Sinhalese Mahāvihāra.
Buddhaghosa with three copies of Visuddhimagga, Kelaniya Raja Maha Vihara
Theravāda is the most commonly accepted name of Buddhism's oldest existing school. The school's adherents, termed Theravādins, have preserved their version of Gautama Buddha's teaching or Buddha Dhamma in the Pāli Canon for over two millennia.
The Thuparamaya Stupa, the earliest stupa after Theravada Buddhism became the official religion in Sri Lanka, dating back to the reign of King Devanampiya Tissa (247–207 BCE)
The Ruwanwelisaya stupa, built by the Sri Lankan King Dutugemunu (c. 140 BCE)
Gold Plates containing fragments of the Pali Tipitaka (5th century) found in Maunggan (a village near the city of Sriksetra)
Bagan, the capital of the Bagan Kingdom. Between the 11th and 13th centuries, more than 10,000 temples, pagodas and monasteries were constructed in the Bagan plains.