The Assam government on Monday acquired the historic Matiabag Hawa Mahal of the Gauripur royal family in Dhubri district to preserve it as a heritage site by paying an amount of Rs 15.20 crore to the family members. The royal property was handed over to the state's department of cultural affairs for its restoration and preservation as a museum in the memory of Goalparia folk singer Pratima Pandey Barua.