Pushkar   in  Rajasthan.
   Once Lord Brahma decided to conduct an Yagna.He selected this place in Pushkar,in Rajasthan which had a pond near by.He invited all  Gods and Godesses ,devas and maharashis for the function.On a certain day the ritiual was proposed to be conducted. Everyone gathered there.But GoddessSaraswathi,Brahma's wife did not come on time.The auspicious time was only for a short period and time running short.

So Brahma asked Indra to find a girl and to bring her there.The girl was brought and purified by making her to enter the mouth of Kamadenu  cow and exit by its tail.Brahma then married that purified girl and named her Gayathri.Then the yagna was conducted peacefully.Soon goddess Saraswati came and got rage seeing her husband remarrying another girl.She cursed Lord Siva and Lord Vishnu that they will suffer seperation from Goddess Parvathy and Goddess Lakshmi.Brahma will not have any Temple other than Pushkar.

That curse made Brahma  not to have any Temple any where.Brahma gave that place to our earth by throwing a lotus in that pond,which later on became the famous Pushkarnithirtha., a famous pilgrim place.That girl Gayathri became the famous Goddess Gayathiri whose mantra has become so popular.Pilgrims take bath in that pond and chant Gayathri mantras there for attaining moksha.

In Hindu Brahmins families, the thread ceromony is conducted for the sons at the ages from5 to 11 years.During that mukurtham time father of that son preaches this Gayathri Mantra in his hear thrice in the midst of Gurusastry and the mother of the child by closing themselves with a cloth. that is known as Brahmopadesam.He thus becomes brahmachari.
There after he performs the sandhyavanthanam daily.

"OM Bhubavar suvaha Satya vathur Vareniyam  Bargodevasya Dhimahi
Deeyoyona Prachodhayath."