Buddhist ruins are remnants of ancient structures and sites associated with the Buddhism religion. These ruins often include stupas, monasteries, and temples, showcasing the architectural styles and cultural practices of the time. Many ruins are found in countries like India, Sri Lanka, and Thailand, where Buddhism has a long history. These sites are significant for their historical and spiritual value, attracting researchers and tourists alike. Some well-known examples include the Ajanta Caves in India and the ancient city of Anuradhapura in Sri Lanka. Preservation efforts are ongoing to protect these important cultural heritage sites.