Jalalgarh Fort is a historic fort located in the Purnia district of northeastern Bihar. It was built in the medieval period and is associated with regional rulers who controlled parts of the Seemanchal area. The fort once served as a strategic military and administrative center due to its location on important trade and movement routes. Today, only ruins and remnants of the fort remain, reflecting its past glory. The structure was made using bricks and traditional construction techniques of the time. Jalalgarh Fort holds archaeological and historical value for understanding local history. The surrounding area reflects a rural landscape with traces of the old settlement. The site attracts historians and heritage enthusiasts interested in lesser-known forts of Bihar.