Ōyamazumi Shrine (大山祇神社, Ōyamazumi Jinja) is located on the island of Ōmishima in the Seto Inland Sea. The shrine is dedicated to the gods who protect sailors and soldiers. Because of this, many daimyo and other military leaders have made offerings at the shrine in hopes of military success, or in thanks for victory in battle. The offerings of swords, armor, and other military equipment are now housed in the largest museum of fighting equipment used during the age of the samurai in Japan.