Horikiri Shobuen Iris Garden 堀切菖蒲園

Popular since the Edo period (1603–1867), Horikiri Shobuen is a Japanese-style garden. This small slice of calm is most known for its 6,000 irises that bloom every summer. Make sure to visit in early to mid-June, when the irises are at their peak and the garden holds its annual iris festival.