To look in the extent, the 400 years of glory city, Dhaka has an interesting past, its transformation is rapid yet it sees unusual phenomenon. The growth pattern of the city is not always pleasant. Results, urban form and streetscapes are chaotic. From sultanate period to Mughal-to British-to Pakistan period, all these which were structured were mitigated by ongoing migration, unplanned settlements and incoherent built from. The paper further analyses on the background of urban transformation in the city, tries to relate with the current growth and decode the genome pattern of the old town. The Mughal gem 'katra'(caravanserai)act as a center pole of further analysis and tends to sketch a concept/proposal for the selected locality which affects the neighborhood and the caravanserais as well. Water became a key part of the proposal that also relates to the history. A final sketch has revealed a possible way to restore the grandeur of the caravanserais. The proposals however is not the footprint of every solutions but rather can be a starting point where the transformation can occur.