CC Madhya 9.68
prabhāve ‘vaiṣṇava’ kaila saba śaiva-gaṇa
Arriving at Śiva-kāñcī, Caitanya Mahāprabhu visited the deity of Lord Śiva. By His influence, He converted all the devotees of Lord Śiva into Vaiṣṇavas.
Śiva-kāñcī is also known as Kāñcīpuram, or the Benares of southern India. In Śiva-kāñcī there are hundreds of temples containing symbolic representations of Lord Śiva, and one of these temples is said to be very, very old.