Chembakassery Sree Vishnumaya Temple, located at Parakkottam, Koratty, near Chalakudy in Thrissur district is a revered temple dedicated to Sree Vishnumaya, a powerful and widely worshipped deity known for bestowing protection, prosperity, and divine grace upon devotees. The temple also enshrines Mantramoorthy as its sub-deity, adding to its spiritual significance. Renowned for its vibrant traditions and deep-rooted faith, the temple attracts devotees from across the region who seek blessings and participate in its sacred rituals. One of the major annual celebrations of the temple is the Vellattu Maholsavam, held for two days during the Malayalam month of Dhanu. This important festival is marked by traditional ceremonies, devotional more offerings, and the unique Vellattu rituals associated with the worship of Sree Vishnumaya, creating an atmosphere of profound devotion and cultural splendour. The temple maintains evening worship hours and remains open daily from 5:30 PM to 8:00 PM, providing devotees with an opportunity to offer prayers and experience the serene spiritual ambience of this sacred shrine.