The most sacred space, Sanctum Sanctorum or Garbhagrha (Sanskrit), of ancient Hindu temples were located in the pyramidal structure with a cube in the base. The whole structure was called Vimana. The inner space of the Vimana was the most sacred, i.e. living energy itself. Vimana of the temple was built according to Vaastu Shastra, ancient Indian theory of architecture. Vimana is a super structure of the temple.