Ahsan Manzil is a historic monument in the capital city of Bangladesh. It is situated on the banks of Buriganga river in Old Dhaka, Islampur. This was the palace of Nawabs of Dhaka. Currently it is used as a museum. Its founder Nawab Abdul Gani He named it Ahsan Manzil after the name of his son Khwaja Ahsanullah. The construction work of Ahsan Manzil began in 1859 and ended in 1872. In 1906, the decision to establish a Muslim League was held in a meeting held here. This is a historic event. Muslims in this subcontinent were oppressed and lagged behind in all directions. There was no one to see their interests. After the establishment of the Muslim League, the party became a platform to look after their political and socio-economic aspects.
In the middle of the eighteenth century, the landlord of Jalalpur Pargana Sheikh Enayetullah Ahsan Manzil, a place named 'Rangmahal', was created in the present place. Later, his son, Sheikh Motiullah, sold the Rang Mahal to a French merchant. It was long known as their trade cottage. Later, in 1835, Khwaja Alimullah, father of Nawab Abdul Ghani, living in Begum Bazar, started buying it. Nawab Abdul Ghani renovated the palace in 1872. After the construction of the new building, he named it Ahsan Manzil after his beloved son Khwaja Ahsanullah. In 1897, on 12th June the earthquake hit Dhaka due to heavy losses of Ahsan Manzil. Nahabat Khan adjacent to Islampur Road along Barandas south of Ahsan Manzil is completely broken. Later, Nawab Ahsanullah rebuilt it. Before that, Ahsan Manzil was damaged by the storm.