The project investigates the use of simulation software to represent the environmental conditions at the the site, demonstrating the behavior of light, shadow, wind and sound. The energetic simulations inform the design of Dakō Yane (Serpentine Roof), an urban intervention situated atop a pedestrian bridge at Ueno Station, the gateway to central Tokyo.  The project aims to revitalize an underused pedestrian bridge by converting it into a pedestrian street and urban park. The proposal features a continuous roof system capable of housing a wide variety of interchangeable program slots embedded in its connective tissue, creating a datum that provides a rich and stable microclimate by addressing appropriate scalar and environmental conditions that guide pedestrian navigation while offering a space for cultural confluence.