The correct answer is -Sanchi Stupa is a Buddhist complex located in Sanchi town, Madhya Pradesh, India. It is one of the oldest and most well-preserved Buddhist stupas in India, dating back to the 3rd century BCE. The Sanchi Stupa is an important historical and archaeological site, and it is considered a UNESCO World Heritage Site. The complex consists of several Buddhist structures, including stupas, temples, monasteries, and pillars, which were built over a period of several centuries. The Great Stupa of Sanchi is the largest and most well-known structure in the complex, and it is considered a masterpiece of Buddhist architecture.
