Fort William is a fort built in Calcutta (presently Kolkata) on the eastern banks of the River Hooghly, the major distributary of the River Ganges, during the early years of the Bengal Presidency of British India. It was named after King William III of England and Ireland and II of Scotland. In front of the Fort is the Maidan, which used to be a part of the Fort and is the largest urban park in Calcutta.