Water Basin at Saimyoji Horai-Tei Garden is a nationally designated scenic spot, and the temple itself is a national treasure. The Horai Garden is said to be based on a garden designed by Kobori Enshu. The garden features standing stones that are meant to represent bodhisattvas. There is also a stone grouping that represents the Twelve Divine Generals. One of the islands in the Shinji-Ike Pond represents a crane, while another represents a tortoise. There is also a sculpted lantern by artist Ishiya Miadroku. Saimyoji is also one of the three mountains of Koto, and its garden is renowned for its moss.