The Dhanvantari Koop of Kashi is believed to cure the gravest ailments

Kashi, Banaras, Benares, Varanasi, these are all the names of Lord Shiva’s nagri, his region, his home. Kashi is one of the oldest and most spiritual cities in India, and is often called the spiritual capital of the country owing to the sheer number of temples present there, the presence of Maa Ganga, and of course, the Kashi Vishwanath and Kaal Bhairav temple.
Kashi is where people go to seek enlightenment, wisdom, blessings, and also Moksha. And so in Kashi, there is a famous saying ‘Kashi Marnam Mukti’, which means to die in Kashi equates to salvation.