The original structure was built in Greco Roman architecture by Napoleon III in 1855, with the architect being Louis Guerre.

It is the only church in Pondicherry city that offers mass in three languages namely French, Tamil and English.

The altar is originally believed to have a statue of Our Lady of Angels, but houses a Holy Cross in modern times.

[1] The twin tower has stained glass windows that sport red, blue and yellow colours.

During 2012, after a renovation of the chapel, the operation of the bell has been suspended on account of vibrational effects causing hindrance to neighbouring structure.

In 1674, the French Capuchin missionary Cosmos de Gien founded the first Christian mission in Pondicherry.

After 154 years of zealous missionary enterprise the Capuchin mission was handed over to the Holy Spirit Fathers in 1828.

This Capuchin mission came to an end due to the shortage of missionaries in France.Based on records in National Archives in Pondicherry 1777, historian Jayasheela Stephen argues that the Capuchins, the original monks, wanted the church to be with a height of 40 ft (12 m) in 1746 and planned to build it close to the fort.

The original structure was built in Greco Roman architecture by Napoleon III (c. 1852–70) in 1855, with the architect being Louis Guerre.