During his reign, the famous Pancha Rathas, a monolithic rock-cut temple complex and a UNESCO World Heritage Site was constructed.

Encouraged by this victory, Narasimhavarman led his army along with his general Paranjothi and attacked Vatapi, successfully defeating[4] and killing the Chalukyan Emperor Pulakeshin II in 642 CE.

[7] His general Paranjothi (a Vikrama Kesari, also known as Paradurgamarddana) was known very well for his devotion to the God Shiva and as one of the 63 Nayanar saints, is said to have personally destroyed the city of Vatapi under the command of Narasimhavarman I. Sekkizhaar's work 12th tirumurai credits this siruttondar of having destroyed the evil kali as manifested by the deccan enemy of the Pallavas.

Many grants refer to this event as "Kilisayoneriva Vimattita Vathapi" or the one who destroyed Vatapi, the same way the Sage Agastya had killed a demon by that name long ago.

(**) The Sinhalese prince Manavarman lived at the court of Narasimhavarman I and had helped him crush his enemy Pulakeshin II.

[8] The Pancha Rathas, a monolithic rock-cut temple complex and a UNESCO World Heritage Site were constructed during his reign.

Kalki Krishnamurthy's work, Sivagamiyin Sabadham, is based on Narasimhavarman's early years and his battles with the Chalukyas.