The question is ambiguous, as it could refer to the first UNESCO World Heritage Site ever, or the first in a specific region or country. Considering the provided reference focuses on India, I'll assume the question refers to the first UNESCO World Heritage Sites in India.
In 1983, four sites in India were simultaneously designated as UNESCO World Heritage Sites. Therefore, there isn't one single first site, but rather a group of sites recognized at the same time. These sites are:
- Agra Fort (Uttar Pradesh)
- Ajanta Caves (Maharashtra)
- Ellora Caves (Maharashtra)
- Taj Mahal (Uttar Pradesh)
Since the question asks for "the 1 Unesco World Heritage Site", technically the best answer would be to list all those designated in the same year in India. If the question refers to worldwide sites, it needs to be rephrased.
