Prime Minister Narendra Modi today flagged off MV Ganga Vilas, the world's longest river cruise, in Uttar Pradesh's Varanasi through video conferencing. 32 Swiss tourists will take the maiden journey to reach Dibrugarh in Assam via Bangladesh. The PM inaugurated a 'Tent City', developed on the lines of similar setups in Gujarat's Kutch and Rajasthan, on the banks of the Ganga in Varanasi. Over 200 tents will offer tourists a panoramic view of the famed ghats of the holy city on the other side of the river along with live classical music, 'aarti' in the evening, and yoga sessions.