
Idrakpur Fort
A river fort built around 1660 AD by the Mughal Subahdar Mir Jumla as part of a triangular defence with the Hajiganj and Sonakanda forts against Portuguese and Magh pirates. Its features include a circular drum tower 32.5 m in diameter and a staircase to a hidden underground magazine. It is managed by the Department of Archaeology and open to the public.