It is an example of 'Hindu-Rajput' architecture. This is considered as the most important model of the Rajput architecture in Nepal.Fully built in bright white, the temple is an example of perfect artistry. Constructed in an area of 4,860 sq. feet in a mixed style of Islamic and Rajput domes, the temple is 50 meters high. It is a three storied structure made entirely of stone and marble. All its 60 rooms are decorated with colored glass, engravings and paintings, with beautiful lattice windows and turrets.According to legends, king Janak ruled this area (called Mithila desh) during the Ramayana period. His daughter Janaki, during her swyambar, had chosen Lord Ram as her husband, and become queen of Ayodhya. There marriage ceremony is believed to have occurred in the nearby Vivaha Mandap.
The temple is popularly known as the Nau Lakha Mandir (meaning Nine Lakhs). The cost for the construction of the temple was about the same amount of money: Rupees Nine Lakhs or Nine Hundred Thousands and hence the name. Queen Vrisha Bhanu – of the Indian state of Tikamgarhm built the temple in 1910. In 1657, a golden statue of the Goddess Sita was found at the very spot, and Sita is said to have lived there. The legend had it that it was built on the holy site where Sannyasi Shurkishordas had found the images of Goddess Sita. In fact, Shurkishordas was the founder of modern Janakpur and the great saint and poet who preached about the Sita Upasana (also called Sita Upanishad) philosophy. Legend has claimed it that King Janaka performed the worship of Shiva-Dhanus on this site.
Every year, thousands of pilgrims from Nepal, India and other countries visit Ram Janaki Temple to worship Lord Ram and Sita. During the festivals of Ram Nawami, Vivaha Panchami and Dashain or Dushaharaa there is presence of even more worshipers.