Kirosan Observation Park is located on Oshima Island in Imabari City, Ehime Prefecture, and is a spectacular spot that represents the Shimanami Kaido. From the summit, which is 307 meters above sea level, you can enjoy a 360-degree panoramic view of the Kurushima Kaikyo Bridge, the world's first triple suspension bridge, and the beautiful islands floating in the Seto Inland Sea. The observation deck is a unique structure designed by world-renowned architect Kengo Kuma, and its beautiful design is also one of its major attractions.

The greatest attraction of this observation park is that you can enjoy different views depending on the time of day. During the day, the contrast between the blue sea, the white bridge, and the green islands is vivid, and on clear days, you can see far into the distance with a sense of openness. At dusk, the sky turns orange, creating a romantic atmosphere. And at night, you can enjoy a breathtaking view of the illuminated Kurushima Kaikyo Bridge and the night view of Imabari City shining like a jewel.