The Kumbh Mela is a Hindu pilgrimage where millions gather on the banks of the Ganges and Yamuna rivers in India to bathe in the sacred waters. This massive gathering, the largest religious one on Earth, is rooted in Hindu mythology and is believed to cleanse sins and grant salvation. The Maha Kumbh Mela, held every 12 years, typically draws over 400 million people, with the city of Prayagraj (formerly Allahabad) hosting the largest event.