Hare Krishna Temple

Excerpt from Wikipedia:

The Hare Krishna mantra, also referred to reverentially as the Maha Mantra ("Great Mantra"), is a sixteen-word Vaishnava mantra made well known outside of India by the International Society for Krishna Consciousness (commonly known as 'the Hare Krishnas'). This mantra appears within many traditions of Hinduism and is believed by practitioners to bring about a higher state of consciousness when heard, spoken, meditated upon, or sung out loud. According to Gaudiya Vaishnava theology, this higher consciousness takes the form of pure love of God (Krishna). The mantra is contained in the texts of Hinduism known as the Upanishads, which are considered by some scholars to have roots in the Vedic past.

The Hare Krishna mantra is composed of Sanskrit names in the vocative case: Hare, Krishna, and Rama :

Hare Krishna Hare Krishna
Krishna Krishna Hare Hare
Hare Rama Hare Rama
Rama Rama Hare Hare

In the hymn Vishnu Sahasranama spoken by Bhishma in praise of Krishna after the Kurukshetra war, he is also called Rama. "Hare" can be interpreted as either the vocative of Hari, another name of Vishnu meaning "he who removes illusion", or as the vocative of Harā, a name of Rādhā, Krishna's eternal consort or Shakti. According to A. C. Bhaktivedanta Swami Prabhupada, Harā refers to "the energy of God" while Krishna and Rama refer to God himself, meaning "He who is All-Attractive" and "He who is the Source of All Pleasure". Rama can also refer to Radha-Raman, another name of Krishna meaning beloved of Radha, or as a shortened form of Balarama, Krishna's first expansion.
The mantra is repeated, either out loud (kirtan), softly to oneself (japa), or internally within the mind. Srila Prabhupada describes the process of chanting the Maha Mantra as follows:
Krishna consciousness is not an artificial imposition on the mind; this consciousness is the original energy of the living entity. When we hear the transcendental vibration, this consciousness is revived ... This chanting of 'Hare Krishna, Hare Krishna, Krishna Krishna, Hare Hare / Hare Rama, Hare Rama, Rama Rama, Hare Hare' is directly enacted from the spiritual platform, and thus this sound vibration surpasses all lower strata of consciousness - namely sensual, mental, and intellectual ... As such anyone can take part in the chanting without any previous qualification.