This study aims to examine the relationship between the waterfront revitalization processes and urban waterfront heritage comparatively focusing on historical developments in the context of longue durée spatial transformation, and considering the strategy, management, planning, legislation, and implementations of the change by analyzing two historical port areas. The study will investigate these issues over Galata Waterfront (Istanbul) and Mersey Riverside (Liverpool). The multi-layered historical waterfront of Galata has recently experienced a drastic change under the Galataport Project; simultaneously, Liverpool with an outstanding legacy of the maritime image has undergone a comprehensive change through the implementation of waterfront regeneration programs lately, especially with the Liverpool Waters Project.