Dhaka, the capital of Bangladesh has been decorated with a number of historic monuments and buildings which indicated her affluent past. For example the Lalbagh Fort, Ahsan Manjil, Boro Katra, Choto Katra, Armenian Church may be mentioned. All these glorious historic buildings contain the proof of enriched and gorgeous architecture. But because of the lack of any specific conservation policy and their implementation, the surrounding sites of these historic buildings are being grasped by rapid urban growth and losing their attractive appeal that creates historic feelings. This research is focused on identifying the effect of surrounding built structures on historic sites. Lalbagh Fort & Ahsan Manjil as a representative of such a historic site. The book should be especially useful for Architect, Urban planner or anyone who are interested for conservation issues.