Trimbakeshwar is one of the holy places of not only Maharashtra but the whole India is near Nashik and also one of the twelve Jyotirlingaas of Lord Shiva. This is the holiest place to perform Shradha ceremony like Narayan nagbali As per Nirnaya Sindhu - a religious book of Hindus.

These pujas are performed at Trimbakeshwar mainly :
Kaalsarp Dosh,
Pitra dosha / Narayan Nagbali,
Tripindi Shradha,
Mahamrutunjay Jaap,
Rudrabhishek,
Nakshatra Shanti