Some of the popular temple are as follows 1 kashi vishwanath temple ... 2 kaal bhairav temple (kashi kotwaal mandir) 3 sankat mochan hanuman temple 4 annapoorna mata mandir and many more... still many temple there in kashi. I knew such temple because I went there personally. try to sarnath as well. there you will see many Buddist temple.
There are a few temples in Varanasi, the most famous being Kashi Vishwanath Temple.
Other notable temples include Sankatmochan Mandir, Kaal bhairav Mandir and so on.
There is also a Buddhist temple know as Sarnath