10. Jetavanaramaya, Sri Lanka
This stupa located in the sacred city of Anuradhapura in Sri Lanka. This stupa have high significance in the country as it represents Buddhist monks of Theravada and Mahayana, oldest surviving branch of Buddhism.
Jetavanaramaya was third highest building of ancient world, have height of 400 feet. This stupa was built in 4th century by the king Mahasena, 93 million baked bricks were used for it’s construction. The entire compound covers an area of 5.6 hectares, contains 10000 Buddhist monks.