St John's Jacobite Syrian Church is situated at Olassa in
, 8 km west of Kottayam
. The present structure of the church was constructed at the time of second vicar Late Rev. Fr. Thomas Pampadithara. The main worship service is the Holy Qurbana.
Kallumkathra St George Jacobite Syrian church
The church can be reached by taking buses plying on Olassa–Parippu route.