Atrīśvaratīrtha (Atrishwaratirtha) is a shrine of pilgrimage in the holy land of Vārāṇasī (Varanasi). The great sage Atri consecrated a liṅga (linga) here. 

Aiyangar Kṛtyakalpataru of Bhaṭṭa Lakṣmidhara(Tīrthavivecanakāṇḍa. P. 43)