Kashi, or Varanasi, is of great importance in Hinduism as it is one of the holiest cities. It is believed that God Shiva founded that Varanasi city. As per Skanda Purana, Kashi rests on the point of his trident. It is His permanent earthly abode and He is always present here.
The spiritual importance of Kashi is found in the Kashi Khanda of Skanda Purana. In the chapter, Shiva tells his son Skanda, or Kartik, that the three worlds form one city of mine and Kashi is my royal place in the city.
When there is an end to one cycle of creation through pralaya or great deluge, Kashi is the place from where the next cycle of creation begins.
The most important temple dedicated to Shiva, the Kashi Vishwanath Temple, is located on the banks of Ganga in Kashi.