<Tr> <Th> Genre </Th> <Td> Fair </Td> </Tr> <Tr> <Th> Frequency </Th> <Td> Rotates to the same site every 12 years </Td> </Tr> <Tr> <Th> Location (s) </Th> <Td> Haridwar, Prayag (Allahabad), Nashik - Trimbak, and Ujjain </Td> </Tr> <Tr> <Th> Country </Th> <Td> India </Td> </Tr>

Where does the world's largest river festival take place