Mahasthangarh is the site of ancient Pundranagara, capital of the Pundra region and among the oldest urban sites in Bangladesh. A fortified city on the bank of the Karatoya river, it was occupied for well over a thousand years, under the Mauryas, the Guptas, the Palas and later rulers.
The most famous find is the Mahasthan Brahmi inscription, a short text on stone generally dated to around the 3rd century BCE, one of the oldest written records found in Bangladesh. Today the brick ramparts of the citadel still rise above the surrounding fields, and excavated mounds with temple, monastery and palace remains are scattered for miles around.
On the citadel stands the shrine of Shah Sultan Balkhi Mahisawar, a saint remembered in local tradition for bringing Islam to the area. Nearby are the Gokul Medh mound — popularly called Behular Basor Ghor after the heroine of the Manasa legend — and a site museum displaying coins, terracotta and sculpture from the excavations.