We have shown quite a few slender buildings, but Klein Dytham's Billboard Building in Tokyo may be the smallest- eight feet at the big end, two feet at the narrowest, thirty-six feet long. It is also covered in an image of a bamboo grove that controls sunlight in the day, and "by night green light dapples over the intersection — a luminous bamboo plantation in the heart of the metropolis."
according to the architect:
Tokyo is filled with tiny buildings on awkward sites — what fellow Tokyo-based architect Yoshiharu Tsukamoto has called "pet architecture". These are wedged onto tiny slivers of land left over from the slicing and dicing of land by urban planning and property development processes. This building is our very own example of pet architecture.