Hindu ancient temples were not build for prayers.

Ancient temple in India, nobody leads a prayer,unless now if you have paid the priest to please the god.But the main purpose of ancient temples were almost like a battery charger for humans.The only condition made by the ancient masters is you should sit in temple.It was complete science.We have lost the science when the bhakthas took over the territory.Bhakthas do not care about any sciences and they are just devoted to the lord.They  build the temple with 5 basic architecture conditions,such as the size of karpa graha and the outside of parikrama.If a temple were build according to these 5 basic cond,the temple would be able to produce such an enormous energy and vibration.