Ashta Veerattanam Sthala(Eight places where Lord Shiva vanquished demons or divinities with exemplary valor and fury)

These are 8 Shiva temples in Tamil Nadu more than 1000 years old, where Lord Shiva has vanquished demons or divinities with exemplary valor and fury.  Shiva is believed to have destroyed eight different demons namely Andakasuran, Gajasuran, Jalandasuran, Thirupuradhi, Kaman, Arjunan, Dakshan and Taaragasuran.  Of these, seven temples are Tevaram Sung temples, i.e. Thiruvazhuvur is not Tevaram sung temple.  Presiding deity in all the temples is generally called as Veeratteshwarar.