Gurudwara Pehli Patshahi (Rameshwaram) Gurudwara Pehli Patshahi (Rameshwaram) RAMESHWARAM – A town in Tamilnadu state, visited by Guru Nanak Sahib during his first missionary journey. Gurdwara Guru Nanak Udasi Math has been built to preserve the memory of the visit of Guru Sahib.