Shri Kashi Vishwanath Temple, Varanasi is one of the most popular temples in India.
The temple has a Jyotirlinga of Shiva, Vishweshwara or Vishwanatha. It is believed that a visit to the Jyothirlinga is a soul cleansing experience.
This temple has been visited by all the great saints like Shankaracharya, Ramakrishna Paramahamsa, Swami Vivekanad, Guru Nanak and several others.
Web : http://www.shrikashivishwanath.org/