Prayagraj
Take a rowboat to the Sangam — the sacred confluence of the Ganga, Yamuna, and the mythical underground Saraswati river — and take a ritual dip in what Hindus consider the holiest bathing point on earth. The sight of two distinctly coloured rivers merging is visible from the boat and is one of India's most iconic natural phenomena.
During Kumbh Mela the price negotiation is fierce — agree on a fixed round-trip rate before boarding.