The correct answer is: Ancient Buddhist ruins.
Sirpur is an archaeological site in the Raipur district of Chhattisgarh, India. It is famous for its ancient Buddhist ruins, which date back to the 6th-10th centuries CE. The ruins include a number of temples, monasteries, and stupas. The temples are built in the Nagara style of architecture, and are decorated with intricate carvings. The monasteries are also well-preserved, and provide valuable insights into the life of Buddhist monks in the medieval period. The stupas are the largest and most impressive of the ruins at Sirpur. They are built in the shape of a dome, and are decorated with Buddhist symbols.
The other options are incorrect because:
- Medieval temples: Sirpur is famous for its ancient Buddhist ruins, not medieval temples.
- Tribal villages: Sirpur is not famous for its tribal villages.
- Wildlife sanctuary: Sirpur is not a wildlife sanctuary.