As long as the Lord remained at Purī, thousands of His devotees used to come to see Him during the Ratha-yātrā car festival of Lord Jagannātha. And during the car festival, the washing of the Guṇḍicā temple under the direct supervision of the Lord was an important function. The Lord's congregational saṅkīrtana movement at Purī was a unique exhibition for the mass of people. That is the way to turn the mass mind towards spiritual realization. The Lord inaugurated this system of mass saṅkīrtana, and leaders of all countries can take advantage of this spiritual movement in order to keep the mass of people in a pure state of peace and friendship with one another. This is now the demand of the present human society all over the world.
(Srimad Bhagavatam------introduction).

Sanātana Gosvāmī (formerly known as Sākara Mallika) was in the cabinet service of the Bengal government under the regime of Nawab Hussain Shah. He decided to join with the Lord and thus retired from the service. On His way back from Vṛndāvana, when He reached Vārāṇasī, the Lord became the guest of Śrī Tapana Miśra and Candraśekhara, assisted by a Mahārāṣṭra brāhmaṇa. At that time Vārāṇasī was headed by a great sannyāsī of the Māyāvāda school named Śrīpāda Prakāśānanda Sarasvatī. When the Lord was at Vārāṇasī, the people in general became more attracted to Lord Caitanya Mahāprabhu on account of His mass saṅkīrtana movement. Wherever He visited, especially the Viśvanātha temple, thousands of pilgrims would follow Him. Some were attracted by His bodily features, and others were attracted by His melodious songs glorifying the Lord.
(Srimad Bhagavatam------introduction).

After accepting the sannyāsa order at Katwa, Śrī Caitanya Mahāprabhu traveled continuously for three days in Rāḍha-deśa and, by the trick of Nityānanda Prabhu, eventually came to the western side of Śāntipura. Śrī Caitanya Mahāprabhu was induced to believe that the river Ganges was the Yamunā. When He was worshiping the sacred river, Advaita Prabhu arrived in a boat. Advaita Prabhu asked Him to take His bath in the Ganges and took Him to His (Advaita's) house. There all the Navadvīpa devotees, along with mother Śacīdevī, came to see Śrī Caitanya Mahāprabhu. This house was located at Śāntipura. Mother Śacīdevī cooked for Śrī Caitanya Mahāprabhu and Nityānanda Prabhu, and at that time there were many joking exchanges between Advaita Prabhu and Nityānanda Prabhu. In the evening there was a mass saṅkīrtana at the house of Advaita Prabhu, and mother Śacīdevī gave Śrī Caitanya Mahāprabhu permission to leave. She requested Him to make Jagannātha Purī, Nīlācala, His headquarters. Śrī Caitanya Mahāprabhu granted His mother's request and, followed by Nityānanda, Mukunda, Jagadānanda and Dāmodara, left Śāntipura. Bidding farewell to mother Śacīdevī, they all proceeded toward Jagannātha Purī, following the path of Chatrabhoga.
(Sri Caitanya Caritamrta------3--summary).

After the mass nagara-saṅkīrtana in protest against the magistrate Chand Kazi, the Kazi was converted to a devotee. Then Śrī Caitanya Mahāprabhu returned with His saṅkīrtana party to the house of Śrīdhara, and Chand Kazi followed Him. All the devotees rested there for some time and drank water from Śrīdhara's damaged iron pot. The Lord accepted the water because the pot belonged to a devotee. Chand Kazi then returned home. The place where they rested is still situated on the northeastern side of Māyāpur, and it is known as kīrtana-viśrāma-sthāna, "the resting place of the kīrtana party."
(Sri Caitanya Caritamrta------1:17:70-------purport).