✅Sanchi Stupa is a UNESCO world heritage site since 1989. Sanchi is in Madhya Pradesh.
✅Ashoka built it in the 3rd century BCE. Originally, it was smaller than its present
dimensions. It was expanded in later periods.
✅ The original structure was made out of bricks. Later on, it was covered with stone, vedica, and the torana (gateway).
✅The harmika is a square railing on top of the dome/mound.
✅The chhatra is an umbrella on top of the harmika. There is a sandstone pillar in the site on which Ashoka’s Schism Edict is inscribed.
✅The original brick dome was expanded into double its size during the reign of the Shunga dynasty with stone slabs covering the original dome.