Mar Sleeva Syro-Malabar Church, Mapranam, Thrissur is one of only a handful couple of houses of worship in Asia which has gotten the relic of the Holy Cross, some portion of the Holy blood of Jesus Christ and a bit of the towel utilized by Veronica to wipe the substance of Jesus Christ, during the excursion of the Passion, all gave from Vatican by the request of the Pope Leo XIII. Accepted to have been developed in AD 928, it is one of the most seasoned places of worship in Kerala state, India, as well as in India. North of it lies Karuvannur River, the Arattupuzha Temple and the houses of worship of Pallissery and Panamkulam.
The Church is a piece of Irinjalakuda ward and is a truly and archeologically famous pioneer focus. It was as of late revamped and draws in admirers past religious obstructions. The offering of candles is the principle custom here and the yearly function is called Thirithelikkal Candle Lighting. A flame made at this Church has been incorporated into the Limca Book of Records as the biggest light in India. As per the book the light has a weight of 1,079 kg and a tallness of 22 ft. On 14 September consistently Christians everywhere throughout the world praise the Exaltation of the Holy Cross and this same day. Mapranam Church commends the primary devour for the sake of the Holy Cross.