Popularly known as the Temple of the Flourishing Law, Horyuji (c.607 CE) is one of the oldest wooden buildings in the world. At present, the temple is composed of two areas, the Sai-in on the west and the To-in on the east. The west side of the temple features the Kondo (sanctuary hall) and the five-story pagoda. The To-in area includes an octagonal hall. The complex also houses lecture halls, monk's quarters, dining halls, and libraries.