St John's Cathedral is located at Pathanamthitta. This is a relatively new church which was constructed replacing the old one. The Church was designed by the famous architect Laurie Baker. The architecture combines the ethos of traditional architecture with modern architecture. There is a huge brass lamp, a flag-mast, copper covered roof, outer walls ornated with stone lamps and pillars which make this church distinctively special.

Another added feature is the lighting inside the church. The light and colour together create an attraction which is rather unique. This Cathedral is extremely spacious and can accommodate over 4000 devotees in the circular church hall and the crypt.