Task: Question Generation
Input (English): Swayambhu is a Buddhist stupa atop a hillock at the northwestern part of the city. This is among the oldest religious sites in Nepal. Although the site is considered Buddhist, it is revered by both Buddhists and Hindus. The stupa consists of a dome at the base; above the dome, there is a cubic structure with the eyes of Buddha looking in all four directions.[clarification needed] There are pentagonal Toran above each of the four sides, with statues engraved on them. Behind and above the torana there are thirteen tiers. Above all the tiers, there is a small space above which lies a gajur.
Output (English): In Swayambhu, what is present in the small area above the tiers?