A plateau jutting out into the sea, Yashima is named after its flat top that looks like a roof.
Yashima is 20 minutes by car or shuttle bus from Yashima Station.
From Takamatsu City take the Kotoku line to JR Yashima Station (around 20 minutes). The mountain is around 20 minutes by car or shuttle bus from there.
Yashima is the site of a famous 12th-century battleground between warring samurai clans. You can see the old battleground from the Dankorei observation deck on the mountaintop. From another observation deck in Shishi-no-reigan, you can enjoy a bird's eye view of the islands in the Seto Inland Sea.
Another attraction on the island is Yashimaji Temple. The main temple, which is said to have been built by the great Chinese priest Ganjin in the 8th century, is painted red and houses a Buddhist image of a seated Senju Kannon. This temple is also number 84 on the Shikoku 88 Temple Pilgrimage .
At the foot of Mt. Yashima you will find Shikoku-mura, an open-air museum displaying traditional Japanese farmhouses that have been restored. You can explore these old houses and get a feel for traditional village life in the Edo period.
The Shin-Yashima Aquarium is located 300 meters above sea level on the top of Mt. Yashima, providing panoramic views of the Seto Inland Sea. There are 500 kinds of fish along with popular sea lion and dolphin shows.