Built in the year 1722, Jalalgarh Fort is quadrangle shaped, was once the night and glory of the royal family of Purnia. The then Nawab, Saif Khan had built the fort strategically, to defend the city against Nepali invasion. This 300 year old ruin is still visited by many enthusiastic tourists. The sheer beauty, left even in the remains, holds evidence of Hindi as well as Islamic examples of architecture. Hon. Chief Minister Nitish Kumar has already ordered to start restoration work of the fortress, to try and compensate the state it is now.