Itsukushima Shrine, located on Miyajima Island, is a UNESCO World Heritage site known for its "floating" torii gate, which appears to rise from the sea during high tide. This iconic Shinto shrine, built in harmony with nature, dates back to the 12th century and includes several connected structures, such as a prayer hall, main hall, and noh theater stage, all standing on wooden piers. The shrine holds great spiritual and historical significance in Japan.