Gingee Fort or Senji Fort (also known as Chenji, Jinji or Senchi) in Tamil Nadu, India is one of the surviving forts in Tamil Nadu, India. It lies in Villupuram District, 160 kilometres (99 mi) from the state capital, Chennai, and is close to the Union Territory of Puducherry. The fort is so fortified, that Shivaji, the Maratha king, ranked it as the “most impregnable fortress in India” and it was called the “Troy of the East” by the British. The nearest town with a railway station is Tindivanam and the nearest airport is Chennai (Madras), located 150 kilometres (93 mi) away.

It is assumed that the Geenji fort has been titled so from the virgin goddess Senji Amman. The fort is embrassed with sturdy walls that traverse to the three inaccessible hills known as Chandrayandurg, Krishnagiri & Rajagiri that makes its structure very unique. The three hills form a triangle while the three main joining walls are nearly twenty meters thick. The three hills make an impregnable bastion and of its interior the fort has numerous entrances and ramparts.

Since the fort is up on the steep hill it is approachable through series of jagged steps that make their path beside the shaky hill track, which makes it a little challenging to visit the fort. The fort has been laced with many amenities like Gymnasium, audience hall, stable, palace, clock tower, and granary. The treasury of the fort has been put up of the Indo-Islamic style like it has a store-house for grains and the Elephants tank.