Harinama in Moscow (Album with photos)
Srila Prabhupada: The Hare Krishna chant is called the maha-mantra, the great, exalted mantra above all other Vedic mantras, because simply chanting the Hare Krishna maha-mantra brings so many beneficial effects. (Srimad Bhagavatam, 9.1.17 Purport).
See them here: https://goo.gl/m5Oed8