From the archive record
In the past, the Red Hills, about 3 kms to the west of the town, were the only land marks providing navigators approaching Pondicherry with orientation points. The French planned to build a tower displaying a light for the guidance of mariners at night. In November 1835, the area around the ‘mât de pavillon’ was selected and, in March 1836, the lighthouse erected by the engineer L. Guerre. It was a fluted tower built above a rectangular base, 29 m high, with 3 openings: a shop, a place for the watchman and an inner staircase leading to the top where the light was placed. The light was visible to a distance of 29kms. It is to be noted that this structure was different from the existing one: the base was a simple rectangular building and not a circular two-storied construction as seen today: