Most of them very well know about lord Shiva, who is god of gods among Hindu religion. In ancient times southern part of India (Dravidians) was worshipping lord Shiva in an enormous way. There is mentioning about this Arunachelaswar temple ( Shiva's temple ) in Rig Veda ( the oldest literature in world ). This temple is that old. Later kings made this temple much more grandness by extending temple boundaries and raising huge towers in 4 directions.