Temple of an avatar like Lord Krishna or even Kalki avatar does not mean anything. Both Lord Krishna and Kalki avatar belonged to spiritual realm having nothing to do with religious practices (rituals). Those indulging in religion must remain confined to rituals. Their belief in Kalki Avatar did not carry any weight. Such religious practitioners never came to know anything about Kalki avatar.
The level of Kalki avatar can be recognized only by a spiritual traveler, one indulging in spirituality.
Religious institutions like temples, churches and mosques carried no meaning for an avatar. An avatar is a deadly combination of a self realized soul like Sri Ramakrishna Paramhansa or Maharshi Ramana and Chanakya (the most able administrator in the entire history of mankind).
To re-establish Dharma (righteousness) religion is of no help. It is indulging in jnana wisdom contained in Bhagavad Gita and Upanishads (independent spiritual treatises) can a self realized soul succeed re-establishing Dharma (righteousness).
In general an avatar abhors meaningless religious practices. As per an avatar essence of life always laid in spiritual practices which means, the real self of us existed in the core of our heart as a spirit, soul atman within. Recognizing, believing in world of souls atmans is more important than indulging in rituals alone.
Spirituality as detailed in Bhagavad Gita advises a human being to realize this true inner self. Realizing our inner self means becoming a pure soul atman in the cosmic journey of life! This becomes possible when indulging in contemplation human beings assimilated jnana wisdom contained in Bhagavad Gita and Upanishads.
Spirituality is all about travelling path of jnana yoga, never path of bhakti yoga or karma yoga alone. To cut darkness of ignorance within, journey of jnana yoga is necessitated.
A true seeker, traveler of spiritual path never goes to a temple, church or mosque. Instead one indulges in attending Satsanga (spiritual discourses) to understand intricacies of spiritual life. Attending a religious congregation also does not help.
Spirituality is always an inner journey towards the spirit, soul atman existing in heart.
The true temple of God is our heart (where existed our soul atman) and not the external temples, churches and mosques. Prime reason why it is said we must always keep our heart pure by invoking positive thoughts, good thoughts all the time.