The beautiful and serene idol is carved in white marble. It was got specially made from Agra. He personally anointed it and conducted daily pooja for the idol for an year before installing it at the sanctum sanctorum of the Temple.

The four-armed Viswambhara is conceived as an incarnation of Lord Vishnu with the divine conch, discus, mace and lotus in the four arms. Ever since installation, strict rituals appropriate to the sanctity and stature of the Temple are conducted rigorously. P.S. Varier also started an annual festival of the Temple in 1934. This seven-day annual festival has become famous for its pomp and cultural importance. Even now the annual festival is a cherished occasion for the aficionados of high culture to come to Kottakkal. All time greats among Kathakali artists and Musicians have been performing during the seven-day festivities at the Viswambhara Temple.

The private Temple has become an abode of solace and consolation for a large number of patients visiting Arya Vaidya Sala. The fact that caste and creed were not barriers for entry to the Temple even at the time of its inception has been widely acknowledged.