The Jetavana Dagoba (Stupa), a UNESCO world heritage site, is the highest brick-built Dagobah in the world, founded by King Mahasena (276-303 AC) upon Mahayana Buddhism, on the ruins of an old monatery. When built with over 93 million bricks in 27 years, it was the third tallest structure in the world after two pyramids of Khufu & Khafra in Giza, Cairo (Egypt). Originally its height was 397 feet and it was erected on land measuring 8 acres. Its diameter was more than 330 feet. Today it is 230 feet high and restoration work is in progress. Before wearing down of its pinnacle, erosion of ground and burial of the base, its height was 400 feet. The Jetavana monastery in its hey days housed bout 3000 monks. It is one of the sixteen most sacred cultural destinations in Anuradhapura.