The emergence of Kadappattoor Mahadeva Temple is a remarkable incident. After thousands of years, a woodcutter named Madathil Paachu Nair discovered the idol of Lord Shiva inside a large Athi (Country Fig - Ficus Glomerata) tree on the banks of the Meenachil River on July 14, 1960, while he was cutting firewood. On that day, there was an unusually stormy weather with deafening thunderbolts. When he had cut half of the tree, it suddenly fell to the opposite side. This unexpected event left Pachu Nair quite frightened, and he even lost consciousness. However, as the tree fell, the stone idol of Lord Shiva emerged from more it. The news of this beautiful Shiva idol's discovery spread like wildfire throughout central Travancore, drawing people from far and wide to witness it. Subsequently, a temple was built through the devoted efforts of Bhaktas. Initially, the temple bore a unique architectural resemblance to North Indian temples. Over time, Kadappattoor has transformed into an important pilgrimage center in Kottayam district. A Devaprasnam conducted in the temple revealed that Lord Mahadeva was dissatisfied with the temple's architecture. Consequently, the temple authorities decided to renovate it and sought the expertise of Brahmasree Kanippayyoor Krishnan Nampoothirippad to redesign the temple structure. The renovation project was completed in 2006, with the Naveekarana kalasam ceremony held in March. Today, the temple boasts a three-storied, spacious rectangular sreekovil with a copper-covered pyramidal roof and a golden thazhikakkudam. The sreekovil walls are adorned with exquisite sculptures. The namaskaramandapam also features a copper-covered pyramidal roof and a golden thazhikakkudam.