According to my personal experience the most sacred temple in India is in Triplicane, Chennai city , South India!!
The Parthasarathy Temple, located in Triplicane(thiruvallikeni ) area of Chennai, is a structure more than 2000 years old, standing in the heart of the bustling city.
Dedicated to different avatars of Lord Vishnu within the many shrines of the temple, it attracts thousands of Sanatan Vaishanvite followers from all across the world.
The temple gets its name from the charioteer version of Lord Krishnan when he drove the vehicle of Arjunan in the Mahabharatham war.The main speciality of this perumal is his big mustache.
Parthasarathy Temple is classified as one of the 108 Divya Desams or holy shrines dedicated to lord Maha Vishnu, as mentioned in the canonical Tamil literature penned down by the Alvar saints of the 6th-9th century, known as Naalaira Divya Prabandham 4000 holy songs of Lord MahaVishnu in world's most ancient language Tamizh.
The temple houses five different forms of Vishnu - YogaNarasimha, Ramar, Gajendra Varadarajar, Ranganathar and VenkataKrishnan. In Tamil, they have different names for these. There are numerous additional shrines as well, enclosed within the 8th-century Dravidian architecture. Chennai is a popular city for the followers of Vishnu to carry out a pilgrimage to because of the many temples devoted to that faith.Sri VenkataKrishnan Temple is one of the oldest among them, and also one of the most popular temple in Chennai.
It is a must visit temple in Chennai city.
You will definitely receive the divine blessings of Sri Krishna Geethacharya perumal if you visit this temple even once in your life time 🙏!
Jai Shri Ram!!
Hare Krishna 🙏!