This is the most important festival held once a year at Oyamazumi Shrine (Oyamazumi Jinja) on Omishima, famous as the 'Grand Guardian of Japan'. Held around April 22nd of the lunar calendar, it attracts many worshippers from all over the country. Countless stalls line the approximately 1km path from the shrine's approach to the port, and the lively scene known as 'Mishima no Ooichi' (Mishima Grand Market) is breathtaking.

This is the spring leisure activity on Mukaishima! Due to clam resource protection, it has sometimes been suspended in recent years, but in revival years, families can enjoy the scent of the tide and muddy play to their heart's content. Please contact the Mukaishima Town Fishery Cooperative for specific dates before visiting.

This is a Shinto ritual held around May 5th of the lunar calendar to pray for a bountiful harvest. Following traditional rice planting by young women in white attire, the festival's main highlight, 'Hitori-Zumo' (one-person sumo), is dedicated. It is a nationally rare and humorous Shinto ritual where a sumo wrestler engages in a three-round match with an 'invisible rice spirit (god)', and it is registered as a Prefectural Intangible Folk Cultural Property.

This is a lively local market event held on the "24th of every month" at Habu Shopping Street in Innoshima. On the 24th only, each store offers special deals, and the hall of "Okakae Jizo-san," said to grant wishes, is opened. It's a warm event where you can interact with local people.

The "Shin-Onomichi Bridge," connecting Honshu・Onomichi and Mukaishima, is beautifully illuminated from sunset, mainly on weekends. The silhouette of the twin bridges, including the parallel "Onomichi Bridge," casts a beautiful band of light on the sea surface, making the night view of the Onomichi Channel even more romantic.

The massive triple suspension bridge "Kurushima Kaikyo Bridge," a highlight of the Shimanami Kaido, is illuminated after sunset on specified dates. The sight of the giant bridge towers and cables floating on the sea is breathtakingly beautiful. "Kirosan Observatory Park" on Oshima side and "Itoyama Park" on Shikoku side are very popular as the best viewing and photography spots.