edit ] Important cities Important cities are Chennai , Chengalpattu , Kancheepuram , Bangalore , Kolar , Salem , Thiruchirapalli , Thanjavur , Kumbakonam , Vellore , Cuddalore , Virudhachalam , Thiruvannamalai , Dharmapuri , Krishnagiri , Villupuram , Tindivanam , Gingee , Nellore , Thirupathi , Jayankondam , Pondicherry ,