>>2160369Miyajima Summit (off the coast of HIroshima)
about 2000 ft elevation gain in 4 miles but very worth it. There are temples and temple ruins all along the trail which is very cool. Be careful to not bump into the venomous snakes that inhabit the island or the hornets. Bring plenty of water because there are no facilities at the top. There is a ranger station at the top which you can see a 360 of the island and the mainland. One of the best hikes I've done there, and it you can take a gondla back down for 2000 yen.
t. lived in Japan in 2017