You can always tell when you are near a Shrine in Japan as the entrance is marked with a Tori (gate).
The island of Miyajima (literally, Temple Island) is famous for it’s floating Tori which marks the entrance from the sea to the Itsukishima Shrine. The present Tori was built in 1875 and is the eigth to be constructed at this site.
The Shrine (Shinto ones are shrines and Buddhist ones are temples) facong the sea was first built in 593. Each section is connected by corridors with a total length of 300 metres.