68. Gassho-zukuri 合掌造 at Shirakawa-go are houses are a type of minka built of wooden beams assembled to form a steep thatched roof that resembles two hands praying together. These structures were built to suit the winter environment in Shirakawa and also provide work space for the area's sericulture. The buildings face north and south so as to minimize wind resistance while controlling the amount of sunlight hitting the roof which keep them cool in summer and warm in the winter. Because of its remote location and harsh winters, this special kind of roof with extreme angles were developed to cope with the deep and heavy snows in winter.