A busabok is a small open structure used in Thai culture as a throne for the monarch or for the enshrinement of Buddha images or other sacred objects. It is square-based and open-sided, usually with twelve indented corners, with four posts supporting a roughly pyramidal multi-tiered roof culminating in a pointed spire, and usually richly decorated. The structure of the multi-tiered roof is very similar, but much smaller in size, to the mondop architectural form. The term is derived from the Sanskrit word puṣpaka, a reference to the Pushpaka Vimana, a flying chariot from the Hindu epic Ramayana.