Gingee Fort in Puducherry, formerly Pondicherry, is one of the finest forts in South India. Cholas initiated its construction when this place was their stronghold in the 9th century. However, the fort as it looks today is mostly the handiwork of the Vijaynagara kings who made it an impregnable citadel. The fortified city is built on the seven hills, the most prominent of which are Krishnagiri, Chandragiri and Rajagiri.