The “Honden and Worship Hall” of Itsukushima Shrine is considered one of the most important and beautiful examples of Shinto architecture in Japan. Itsukushima Shrine itself has a long history; it is said to have been founded in 593, but the present form of the Honden and Worship Hall was not completed until the late Heian Period, particularly around the 12th century when Taira no Kiyomori undertook extensive construction work. The main hall is the central structure of Itsukushima Shrine and enshrines the three main deities of Munakata (Ichikishimahime-no-mikoto, Tashinohime-no-mikoto, and Shoatsuhime-no-mikoto). The main shrine is a unique structure built over the sea, and its appearance changes with the ebb and flow of the tide. This floating appearance is mysterious and serves as a symbolic place of sanctuary. The unique architectural style is a fusion of the Heian-period “Shinden-zukuri” and the “Tempyo-zukuri” of shrine architecture, and its vivid vermilion color is eye-catching. This color is not only for decorative purposes, but also for antiseptic purposes and to ward off evil. The hall of worship, on the other hand, is located in front of the main hall as a place for worshippers to offer prayers to the gods. The hall of worship also has a structure that extends out to sea, and is characterized by vermilion-lacquered pillars and wooden floors. This hall of worship is an important passage to the sacred main shrine, and conveys to visitors the solemn atmosphere of the Shinto sanctuary. The Shinto rituals and bugaku performed here also deepen the cultural and religious significance of Itsukushima Shrine.