At a distance of 39 Kms from Pathanamthitta & 10 kms from Thiruvalla, St. Mary's Orthodox Syrian Church located in Niranam (popularly known as Niranam Valiyapally) is a parish under the Niranam Diocese of the Malankara Orthodox Syrian Church. Founded by St. Thomas in 54 AD, this is one of the most ancient churches in the world. It also contains the mortal remains of St. Thomas.
The present structure was constructed in 1912, and later strengthened in the year 2000. Huge granite Cross, relics of St. Thomas, remains of the old church and the golden cross are the special attractions of the church. The feast of Assumption of St. Mary celebrated on Aug 15th and the Feast of Nativity of St. Mary celebrated on September 8th are important festival of the church. The Feast of St. Thomas on Dec 21st, the Feast of St. Behanan on Dec 27th and the Feasts of Marthoma II and Marthoma V on May10th are also celebrated in a grand manner here.