The Seihoro, surrounded by maple trees, is also known as the “Red Leaves Tea House”, and is a two-storied tearoom Michihiro used to love. The view of the garden from the tearoom on the first floor is characterized by the dry landscaping and the mountains of Kusu reclining beyond the small artifical hill. One can also see the Mori castle town from here, giving rise to the speculation that it may have been made as a castle tower.