Parassala Sree Mahadeva Temple is one of the foremost centres of worship in south Kerala and the temple is situated at the tiny village of Parassala adjoining the Kerala Tamil Nadu boundary. Here the deity, Lord Siva is facing the west, which is considered as a rare phenomenon, and devotees even from far off places attend the worship. It was built by Mallen Chembakaraman Delava of Venad royal family.

The temple is centuries old and the structure is rare stone architecture and Parvathy devi and Vighneswara are the upadevathas. The temple is famous for its rare rites and ceremonies and from time immemorial entry was allowed to all sects in the community irrespective of caste or creed and significantly arayas – a backward community have the privilege of participation for the commencement of important rituals in the temple from ancient times onwards and the Lord render blessings to all irrespective of caste, colour or creed. Parassala, the holy place is well known for communal harmony. Elankam Bhuvaneswary temple is another religious attraction in Parassala.

Many Christian worship places are there in Parassala. That includes a good number of RC (Roman Catholic), ECI, CSI, Lutheran, Pentecost Church of God Zionkunnu and Assemblies of God churches. Church of El-Shaddai at Anchali Jn. is a Pentecostal worship centre.

There are also a good number of Muslim brothers in this constituency, which depicts the communal harmony of the place.

One of the most famous Christian Church in Parassala is St. Peter's Church located in Hospital Junction built in 1604 by the Portuguese, very recently renovated and the Abbs Memorial Church, built in the 1850s by the English missionary Rev. John Abbs. The church choir is called "Abbs Echoes" with their main vision stated as "To produce the echoes of The Great Missionary Abbs." Jehovah's Witnesses is also active in this area since 1975. Southern Kurisumala is the location of a famous Christian pilgrim location, which is not only visited by Christians, but by other religious people also.

Parassala is famous for the HARE KRISHNA temple located in Neduvanvila, which is part of International Society for Krishna Consciousness. Local women from all walks of life and religion gather here as part of women empowerment. This centre houses a go-shala (shelter for cows) and anganvadi ( school for toddlers).