Stupa
Chaityas or the Stupa, Which represents the Buddhist Universe is the Buddhist Sanctuary. sometimes square and sometimes round with spires or steps on the capital. Each Spire or step a point which is supposed to be the highest peak of mount Sumeru, a mythical mountain whence the Buddhichitta loses itself in sunya(zero). on the four sides of the Chaityas the figures of four Dhyani Buddhas Akshobhya, Ratna Sambhav Amitabha, Amoghisiddhi are placed. The place of Vairochana is in the center. In some Chaityas Vairochana is placed to the east along with Akshobhya