Mt. Iimoriyama is a 254-meter mountain in Asuke Town in Toyota City, Aichi Prefecture. It is a part of Korankei Gorge, a famous scenic spot of the prefecture. About 4,000 maple trees growing from both sides of the Tomoe River, a tributary of the Yahagi River, to the top of Mt. Iimoriyama, turn red all at once in fall, which creates an exquisite landscape. It is selected as one of Japan’s 100 Scenic Spots of Autumn Leaves.

The fallen leaves are always cleared off the promenade in this mountain, so there is no danger of slipping on the wet fallen leaves even in fall. The best viewing spot of the autumn leaves is from the vermillion Taigetsu Bridge. It is breathtakingly beautiful.

There are several historic sites in the mountain area. The back shrine of Asuke Hachimangu Shrine used to be located in this mountain until the Meiji period (1868-1912), but there is no remnant of it today. On the mountainside is Kojakuji Temple, where the colony of katakuri (Erythronium japonicum) produces cute white flowers in spring.