Mithila is an ancient cultural region of South Nepal and North India lying between the lower ranges of the Himalayas and the Ganges River. The Nepal border cuts across the top fringe of this region. The Gandak and Kosi Rivers are rough western and eastern boundaries of Mithila. The Ramayana records a dynastic marriage between Prince Rama of Ayodhya and Sita, the daughter of Raja Janak of Mithila. The town of Janakpur, in the northern Nepali section of Mithila, is believed to be Janak's old capital.