Question

by whom was the ahsan manzil built for

Answer 1

Abdul Ghani built Ahsan Manzil and for his son Ahsan ullah.

hope it helps u

Answer 2

Ahsan Manzil (Bengali: আহসান মঞ্জিল, Ahsan Monjil) was the official residential palace and seat of the Nawab of Dhaka.[1] The building is situated at Kumartoli along the banks of the Buriganga River in Dhaka, Bangladesh. Construction was started in 1859 and was completed in 1872.[1] It was constructed in the Indo-Saracenic Revival architecture.