Seoul's Jamsu Bridge, as a flagship initiative of 'Han River Renaissance 2.0', is to be redesigned as a pedestrian bridge with its unique double-decker structure, extending 795 meters. The design envisions a sustainable landmark with pedestrian-friendly space and ample public space that permeates the surrounding neighbourhoods. The concept of 'The Longest Gallery' shapes a destination over the river, weaving with the structure, landscape, and art program. It aspires to define a new urban heart by promoting a healthy and sustainable lifestyle while still celebrating its heritage.