Abstract. In architectural and interior design, working with existing natural elements like contours, trees, and stones is a common challenge. It is vital for designs to harmonize with these elements, minimizing ego and maximizing nature’s gifts. In 2020, I had the chance to design a commercial building in Bogor, Indonesia, on a 440-square-meter site with a 1-meter contour difference and 12 fruit-bearing trees. Preserving these trees posed a challenge; being in the ‘City of Rain,’ the design had to account for Bogor’s high rainfall. Initially, the floor plan incorporated a single tree, but unforeseen variables emerged during construction. Both the design and contractor teams engaged in research and development to optimize the design, ensuring tree preservation and avoiding leaks. Physical streamlining of water around the trees, roof wrapping, and an auxin process to support tree growth were applied. These approaches successfully resolved issues and ensured Tanmu Coffee’s interior design operated optimally. As we approach the second year postimplementation, the design seamlessly continues to serve its purpose.