According to historical records, after the death of ancient Indian kings, they all built hemispherical tombs, which are said to be the prototypes of stupas.Boudha chorten or stupa in Nepal: the largest spherical stupa in the world. After the death of Buddha Shakyamuni, believers cremated his body, collected the remains, and built a tower-shaped tomb with cultural relics to commemorate the Buddha. The origin of Buddhist stupa. Nowadays, the Buddhist stupas in Tibet are derived from this kind of tower-shaped building and gradually developed.