Ahsan Manzil was the authority private castle and seat of the Nawab of Dhaka. The building is arranged at Kumartoli along the banks of the Buriganga River in Dhaka, Bangladesh. Development was begun in 1859 and was finished in 1872. It was built in the Indo-Saracenic Revival engineering. It has been assigned as a national historical center. In Mughal period, there was a garden place of Sheik Enayet Ullah, the landowner of Jamalpur Porgona,in this place. Sheik Enayet Ullah was an exceptionally beguiling individual. He procured a major zone in Kumortuli and included it in his garden house. Here he manufactured a delightful royal residence and named it "Rongmohol".
He used to appreciate here keeping lovely young ladies gathered from the nation and abroad, dressing them with ravishing dresses and costly trimmings. There is an adage that, the foujdar of Dhaka was pulled in to one of the wonderful young ladies. In 1785, the French exchanged the property to a French tradesman named Mr. Champigni, and retaken it at 1801. As indicated by Paris assention of 1814, the French asserted all their left properties at Dhaka, and in 1827 the property was again come back to the French. For the expanding intensity of the English, the French was compelled to leave subcontinent. They chose to offer every one of their properties in Dhaka. So in 1830, the exchanging place of Kumartuli was bought by the set up landowner of Dhaka Khwaja Alimullah.