Thiruvanchikulam Mahadeva Temple, an ancient temple dating back to 2000 years, is a renowned temple in Kodungallur. The temple is known for its various representations of Lord Shiva. It is believed that Sundaramurthy Nayanar, a saint & poet during the Cheraman perusal’s rule, sang at this temple and the sound of Nataraja's dance was heard from the Srikovil.
Maha Shivaratri is a famous festival here attracting a huge number of devotees. The temple has many small shrines dedicated to gods and goddesses. Gopuram Thevar, Dakshinamoorthy, Pasupathy, Natakkal Shivan, Sandhyavela Shivan, Palliyara Shivan, Unni Thevar and Konnakkal Shivan are the different forms of Shiva idols revered in this temple.