Stupas are holy places. These are mounds where part of the mortal remains of Buddha or some things he used is buried. They have been made with bricks or stones. They have a lot of story value.
1. Even before the coming of Buddhism, the practice of making stupas was in existence. Later it became attached to Buddhism.
2. Since they are built over the remains of Buddha or the things he used, they are worshipped as a sign of Buddha and Buddhism.
Followers of Buddha built many stupas in different parts of India. The Buddhist Book “Asokavadana Sishta” says that Emperor Asoka sent the mortal remains of Buddha in all the important towns of his empire and ordered stupas to be built over them. By the 2nd century BC, many stupas were built. The most famous stupas are in Bharhut, Sanchi and Saranath.