Darbhanga is a city and Municipal Corporation in the Indian state of Bihar. It is the 6th largest city of Bihar, only after Patna, Gaya, Bhagalpur, Muzaffarpur and Purnea. It is the headquarters of Darbhanga district and Darbhanga division and was the seat of the Raj Darbhanga and capital of the Mithila region. 'One of the city's iconic monuments, the Darbhanga Fort is worth visiting for its historical significance. Also known as Raj Quila, it was once the stately abode of the Darbhanga Raj family.