In Mughal era, there was a garden house of Sheikh Enayet Ullah, the landlord of Jamalpur Porgona (district), in this place. Sheikh Enayet Ullah was a very charming person. He acquired a very big area in Kumortuli (Kumartuli) and included it in his garden house. Here he built a beautiful palace and named it "Rongmohol" (Rangmahal). He used to enjoy here keeping beautiful girls collected from the country and abroad,

Probably in the period of Nawab Alibardi Khan around 1740 century, Sheikh Moti Ullah, the son of Sheikh Enayet Ullah, sold the property to the French traders. There was a French trading house beside this property. The trading house became wealthier after purchasing this property. In that time, French traders could do business here without paying any taxes by a decree from the emperor Aurangzeb. In that time,

Ahsan Manzil is one of the most significant architectural monuments of Bangladesh. The building structure was established on a raised platform of 1 meter, the two-storied palace measures 125.4m by 28.75m. The height of the ground floor is 5 meters and the height of the first floor is 5.8 meters. The thickness of the walls of the palace is about 0.78 meters. There are porticos of 5 meters height on the northern and southern

There are attractive wooden stairs in the room that is attached to the north of the domed room. The balusters were ornamented with vine leaves made of iron along the railing of the stairs. The wooden ceiling of the room, decorated with geometric designs, is very elegant. The verandas and rooms are covered with marble. The doorways are placed within semicircular arches. The inner doors had multi-colored glasses. Woode.

In 1874, Lord Northbrook, Governor General of India attended an evening function in the palace when he came to lay the foundation of a water works installed by Nawab Abdul Ghani. In 1888, Lord Dufferin also accepted the hospitality offered at Ahsan Manzil. In 1904 Lord Curzon, on a visit to East Bengal, stayed in this palace on 18 and 19 February to win public support for the proposed Partition of Bengal.

Ahsan Manzil, an architectural treasure, is a witness to many historical events of Bangladesh. From the last part of the 19th century to the initial years of Pakistan, the Muslim leadership of East Bengal emerged from this palace. The nawabs of Dhaka used to conduct their court affairs here as chief of the panchayet (village council) everyday. Many anti-Congress meetings were held here under the patronization of Nawab Ahsanullah