Parthasarathy Temple, one of the oldest Krishna temples of Kerala, is the reason why most travellers come to Adoor on a pilgrimage. Lord Parthasarathy who is an incarnation of Lord Krishna is worshipped in this temple. Lord Ganesha and Lord Shiva are the other two major deities worshipped in the Parthasarathy Temple. The temple holds a ten-day annual festival during which this place is frequented by travellers coming from all over Kerala.
The major attraction of the festival is the Gajamela conducted in the temple premises on the final day of the festival. Serving as a visual treat to the spectators, nine costumed elephants are arrayed in front of the temple and take part in a grand procession that is followed. Another festival celebrated fervently is the Ashtami Rohini festival, the birth anniversary of Lord Krishna. Many folk art forms and dances, such as Parichamuttukali, Mayoora Nritham, Ammankudam and Velakali are performed during the festival.