The 6 Tsubo House, located in the bustling district of Yotsuya in Shinjuku, Tokyo, is an exceptional dwelling that showcases how creative design can make even the smallest living spaces feel comfortable and spacious. Designed by Arte-1 Architects, the narrow three-story house, measuring just 56 square meters, was built for the client, a young family of four who desired a small yet open house with a connection to the outdoors.