The seat under the Bodhi Tree (Fig tree) is known as the Bodhimanda, and is said to be the exact spot where Buddha attained enlightenment. According to traditional Buddhist beliefs, when the world reaches its end, the Bodhimanda will be the last to disappear from existence, and the first to appear during recreation. The present Bodhi tree is a descendant of the original tree which Buddha sat under.
Hence, the tree is held in reverence, with monks and pilgrims paying homage to it, offering prayers and flowers several times a day. According to myth, if a Bodhi tree doesn't grow on site, then the ground around the Bodhi tree will be devoid of all plant life, and no one will be able to walk near the site.