Champakulam Kalloorkadu St. Mary's basilica (also called Champakulam Valia Palli) is one of the oldest Christian churches in India and the mother church of almost all Catholic Syrian churches in Alleppey District. It is the first one under the church at Niranam which is believed to have been founded by St.Thomas, the Apostle himself. Believed to be established in AD 427, rebuilt many times and the many rock inscriptions found around the church tell us about the history of the church. The open air Rock Cross at Champakulam church is one of the most ancient ones with clear documentation of its antiquity up to AD 1151. There are many archaeological artifacts found around the church about its history. Champakulam church was once under Niranam Church, which was founded by the Apostle Saint Thomas himself.. Champakulam Church had very friendly relations with the Jacobite Syrian group and had a pivotal role in many ecumenical efforts in the Eighteenth century. One of the martyrs of east syrian catholics (nasranis), Ikkako Kathanar was born to this parish.
On 27-Nov-2016, the church was announced as a Basilica. This is the first basilica in the archdiocese of Changanasserry. So this is the 23rd basilica in India and 9th basilica in Kerala. Also, it is the 4th Syro-Malabar basilica in India.