The Obunsha Building South and North Wings, located in Shinjuku, Tokyo, represent a remarkable example of contemporary office architecture completed in 1993. Designed by the renowned Sir Norman Foster and Partners in collaboration with Foster Asia Japan, these structures showcase Foster's signature approach to high-tech modernism. The buildings demonstrate sophisticated integration of form and function, featuring innovative structural systems and efficient spatial planning characteristic of Foster's architectural philosophy. Their sleek facades and refined detailing make them notable examples of 1990s Japanese commercial architecture, reflecting the influence of prominent international design principles during this period of Japan's economic prominence.