Traditional homes are a key aspect of Japan's historic cityscapes. But an ageing and falling population combined with difficulties to repairs mean that every region is struggling to keep these homes in use. In our second of a two-part series on revitalizing old homes, we look at projects and experimental designs that are turning such houses into public spaces as a way to preserve these cityscapes. Architect Nagasaka Jo explores designs for traditional homes that bring new value to neighborhoods and residents.