Welcome to Miyajima
The small island of Miyajima (宮島) is a Unesco World Heritage Site and one of Japan's most visited tourist spots. Its star attraction is the oft-photographed vermilion torii (shrine gate) of Itsukushima-jinja, which seems to float on the waves at high tide. The gate is undergoing repairs from June 2019, expected to last 2–3 years; during this time the shrine will remain open but the gate will not be visible.
Beyond the shrine, Miyajima has some good hikes on sacred Misen, as well as temples and cheeky deer that do what they want, when they want, and will eat your map (or JR Pass) right out of your pocket if you're not careful.