Final answer:
The Great Stupa at Sanchi dates back to the 3rd century BCE with major constructions during the Gupta Period in the 5th or 6th century. It is an important cultural heritage site associated with the life of the Buddha and contains structures such as the sacred Bodhi Tree.
Step-by-step explanation:
The Great Stupa at Sanchi is one of the oldest stone structures in India and a prime example of Buddhist architecture. Although Emperor Asoka initially commissioned a structure at the Mahabodhi Temple site in the 3rd century BCE, the present Mahabodhi Temple, noted for its grand stupas and sculptures, was built during the Gupta Period in the 5th or 6th century. This period is well regarded for its advancements in art and culture, which included the embellishment and eraction of religious monuments.
As the Great Stupa at Sanchi is a religious site associated with the life of the Buddha, it consists of various structures such as gateways, railings, and the temple itself. The site holds significant cultural heritage due to its complex which integrates the sacred Bodhi Tree and the Lotus Pond alongside the numerous dedications to the Buddha's enlightenment.