Jagaddal Vihara is an ancient archaeological site of Dhamirhat Upazila, 52 km from Naogaon district headquarters. About nine hundred years old, this architectural monument is also known to the locals as the ruins of Batakrishna Zamindar Bari. Originally, Jagaddal Mahavihara was a Buddhist monastery and educational center established between the 11th and 12th centuries. According to historical sources, in the 11th century, after defeating Bhima, King Rampala Barendra recovered his beloved homeland and established the capital Ramavati near Paharpur for the common people and the Jagaddal Mahavihara (university) for the spread of education. Established in the last half of the Pala period, this Vihar was an important place in the field of education and initiation in ancient Bengal. Famous scholars like Vibhuti Chandra, Acharya Dansil, Acharya Mokshakar Gupta, Shubhakar Gupta were engaged in learning and research. This Bihar is mentioned in various Dharmamangal poetry books of ancient Bengal and Niharanjan Ray's Bengali history book.
The length of Jagaddal Mahavihara is 105 meters in east-west direction, 85 meters in north-south direction and height is 5.40 meters. Excavations at this site in 1997 uncovered a partial architectural structure of a Bihar and some important archeological artifacts. Later in 2000, 2013 and 2014 more than 32 places of Jagaddal Vihar were excavated decorated statues, 134 artefacts, 14 bronze statues, burnt clay terracotta, 33 monk rooms and 8x8 meter wide hall. Again only from this monastery, fragments of the Buddhist monastery roof and granite stone pillars with a thickness of 60 cm have been recovered. In addition, the entrance to the monk's room discovered through excavations is decorated with stone pillars, and in some places the goddess's room is also seen. The valuable antiquities from Jagaddal Vihar are currently preserved in the Paharpur Museum.