In the Caitanya-bhagavata (Antya-khanda, Chapter Two) it is said that when Lord Sri Caitanya Mahaprabhu arrived at Sri Bhuvanesvara, He visited the temple of Lord Siva known as Gupta-kasi - the concealed Varanasi

Expressions researched:
"In the Caitanya-bhāgavata (Antya-khaṇḍa, Chapter Two) it is said that when Lord Śrī Caitanya Mahāprabhu arrived at Śrī Bhuvaneśvara, He visited the temple of Lord Śiva known as Gupta-kāśī (the concealed Vārāṇasī)"

Sri Caitanya-caritamrta

CC Madhya-lila

In the Caitanya-bhāgavata (Antya-khaṇḍa, Chapter Two) it is said that when Lord Śrī Caitanya Mahāprabhu arrived at Śrī Bhuvaneśvara, He visited the temple of Lord Śiva known as Gupta-kāśī (the concealed Vārāṇasī). Lord Śiva established this as a place of pilgrimage by bringing water from all holy places and creating the lake known as Bindu-sarovara.

CC Madhya 5.141, Translation and Purport

When Śrī Caitanya Mahāprabhu arrived at Kamalapura, He took His bath in the Bhārgīnadī River and left His sannyāsa staff in the hands of Lord Nityānanda.

In the Caitanya-bhāgavata (Antya-khaṇḍa, Chapter Two) it is said that when Lord Śrī Caitanya Mahāprabhu arrived at Śrī Bhuvaneśvara, He visited the temple of Lord Śiva known as Gupta-kāśī (the concealed Vārāṇasī). Lord Śiva established this as a place of pilgrimage by bringing water from all holy places and creating the lake known as Bindu-sarovara. Śrī Caitanya Mahāprabhu took His bath in this lake, feeling a great regard for Lord Śiva. From the spiritual point of view, people still go to take a bath in this lake. Actually, by taking a bath there, one becomes very healthy even from the material viewpoint. Taking a bath and drinking the water of this lake can cure any disease of the stomach. Regular bathing certainly cures indigestion. The river Bhārgī, or Bhārgīnadī, came to be known as the Daṇḍa-bhāṅgā-nadī after Lord Caitanya bathed in its waters. It is situated six miles north of Jagannātha Purī. The reason for the change in names is given as follows.