Ujjain is one of the seven sacred cities of India. By itself, very dumb and unattractive for tourists. This is one of four places in India where the Hindu festival Magh Mela ( Kumbh Mela ) takes place every 12 years , in which millions of people from all over India take part. The next such festival will be held from April 22 to May 21. Ujjain is known since the time of the Buddha (6th century BC) as the capital of the kingdom of Avanti and the starting point of astronomical and astronomical calculations — the zero meridian passed through the city.