best or great temple to visit Badrikashram and its greatness from as in puranas

 Badrinath, the dwelling place of lord Vishnu, is considered to be the supreme place of pilgrimage and even its remembrance is capable of giving salvation. Virtues attained by the performance of various deeds (tapa, yoga, samadhi), appear to be insignificant as compared to virtues attained by going on a pilgrimage to Badrikashram.

but as in puranas about kasi 

But none of these places can match Kashi because Kashi is incomparable.

The Origin of Kedareshwar

Two incarnations of Lord Vishnu by the names of Nara and Vishnu did penance at Badrikasharam.

Both of them used to worship the idol of Shiva daily. Lord Shiva used to arrive in his subtle form and

accept their offerings without being noticed by them.

One day Lord Shiva appeared before them. Nara and Narayana eulogized him and requested to remain

at that place forever. Lord Shiva accepted their request and established himself as 'Kedareshwar

jyotirlinga'.