India - World's largest human gathering at Kumbh Mela

The Kumbh Mela, is the single largest religious gathering in the world, held at confluence of rivers Ganga and Yamuna in Allahabad it is called the "greatest show on Earth". On January 14, 2013 around 11 million people gathered on a single day for a ritual bath, which is almost double the population of Washington DC, and about 1% of India's population. Over 3 months up to 100 million people will gather. Naked sadhus called Naga Babas are a special group that attract a lot of attention. Pilgrims (Photo by Pallava Bagla/Corbis via Getty Images)