The Sanchi Stupa, a UNESCO World Heritage site since 1989, is a prominent example of Buddhist architecture in India, with a rich history dating back to the Mauryan, Shunga, and Satavahana periods. It showcases various architectural developments over time, including the addition of gateways and decorative elements, reflecting the social and religious conditions of ancient India. The structure evolved significantly, particularly the Great Stupa, which expanded in size and complexity, representing the artistic achievements of ancient artisans.