The principles in the making of the universe are within us and the Hindu temples keep this point in constructing them.
The Hindu Temples are built according to Vedic Principles of Cosmology and the physical structural guidelines are from the Vaasu Sasta and Agamas.
One would temples, including cave temple of Gavi Gangadhara temple in Bangalore, have the Sun's Rays falling on the God's idol on specific days.
Vishnu's Mathsya temple also has these feature.
There are temples where the shadow of the idol falls at a specific pre marked space.
There are quite a few temples and please check my posts under Hinduism.
We have the Sun temple at Konark where one can find Astronomy being used in the construction of temple.
We have the city of Jaipur built based on Vedic principles,
