St. Francis CSI Church, in Kochi, originally built in 1503, is the oldest European church in India and has great historical significance as a mute witness to the European colonial struggle in the subcontinent. The Portuguese explorer, Vasco da Gama, died in Kochi in 1524 when he was on his third visit to India. His body was originally buried in this church, but after fourteen years his remains were removed to Lisbon.
Source ::
en.wikipedia.org/wiki/St._Francis_Church,_Cochin 