Plans for a Diet building began in 1881. The planners hoped to finish it by 1890, when the Diet would meet for the first time. They realized they could not build a very impressive building in time, so they decided to make temporary buildings at first. The first Diet building was a Western-style building made of wood. It burned down in 1891. Another wooden building was made and finished in 1891. It burned down in 1925. A third building was made. The Diet used it until 1936, when the current Diet building was finished.