Jamnagar came into existence a long before 444 years. This was established on the banks of rivers "Nagmatti" and "Rangmatti" by Shri Jam Raval, the descendant of Jam Halla, who is one of the heirs of Lord Krishna, the creator of "Shrimad Bhagwat Geeta". The city has seen many ups and downs during the period's right from Moghals to the present time of independent India.
Shri Jam Ranjisinhji gave a new and fresh outlook to the city during 1909 to 1932. And build broad roads, beautiful markets, and gardens, wide squares and many building. Because of this once in the past this city was known as "Jewel of Khathiyawad". Some of these, construction still exist.
The founder of the princely state of Jamnagar was the Great Jam Rawal, who descended on the northern coast of Kathiawar in 1535 A.D. Jam Rawals father Jam Lakhaji ruled in Terabanu in Kutch.
Jamnagar contains several ancient temples such as Sidhnath Mahadev Temple in Jamnagar city area, the Navlakhi Temple in Ghumli, Kileshwar Temple in Barda Hills, The Ancient Sun Temple at Gop and The Ancient Bhid Bhanjan Temple built by the Jams.
Bala Hanuman is highly venerated among the devotees of Rama. The Bala Hanuman Temple is noted for the continuous chanting of the mantra "Sri Ram, Jai Ram, Jai Jai Ram". Started on 1 August 1964, the chant continues for 24 hours a day, in shifts, and is still continuing. This has earned the temple a place in the Guinness Book of World Records.