Note: no sound] The Indian city of Prayagraj is preparing to reach its climax in the next six weeks with the start on Monday of the Kumbh Mela, a massive Hindu festival that has necessitated the construction of a temporary city to accommodate 450 million people.

The Kumbh Mela festival, the largest religious gathering in the world, has begun in the northern Indian city of Prayagraj.

The Maha Kumbh Mela has got underway in northern India, with organisers expecting over 400 million visitors throughout the festival. In this week's show, we speak to India's permanent representative to UNESCO,