Varanasi, Benares and Kashi are the names of one city. Where the Ganges turns north, though it flowed from north to south, and flows a few kilometers back to the mountains, stands Varanasi. This place is considered especially sacred, along with the merger (Prayag) of Ganga and Jamuna in Allahabad. Varanasi has not only several names, but epithets, often Varanasi is also called the Eternal City, the City of Death, the city of Shiva, and this is true. The first name of this city is Kashi. Kashi is considered one of the oldest cities on Earth, it is mentioned in the Mahabharata, Ramayana, tales of Krishna and the Puranas. Kashi means "light." People believe that the first in India, the jyotirlinga (lingam of light), appeared, as a pillar of light beating from the earth into the sky. On this site stood the ancient temple of Kashi Viswanath, but in the 17th century the Emperor Aurangzeb and his heirs destroyed all Hindu temples in Benares. On the site of Viswanath, a mosque was built.