The name 'Irohajima' refers to the traditional 'Iroha' syllable order in Japanese, as it was historically believed there were 48 islands in the cluster.
The view is particularly noted for its visibility of the 'Kuroshima' and 'Shiroshima' islands within the archipelago.
The site is located within the designated boundaries of the Genkai Quasi-National Park.
The islands are popular among local fishermen and are part of the complex submerged landscape created by the ria coastline of the Hizen region.
Irohajima Observation Deck sits on the Hizen coastline in Karatsu, Saga Prefecture, offering panoramic views of the Imari Bay and the Iroha Islands. The deck overlooks a cluster of forty-eight small islands scattered across the water, which are collectively known as Irohajima. This vantage point provides a clear view of the islands' unique topography, which changes appearance based on the tide levels. The facility includes a rest area and parking, serving as a lookout point for the Genkai Quasi-National Park area. It is positioned on a hill, providing an elevated perspective of the surrounding archipelago and the coastal waters of the Sea of Japan.
The western edge of the wooden viewing platform for the widest frame capturing the island cluster and the horizon.
Bring binoculars to identify the various island formations and sea life in the bay below.
Visit during low tide to see the mudflats and the changing connection between the islands and the coastline.
Carry a light jacket as the hilltop location can be significantly windier than the surrounding coastal towns.
Do not attempt to walk to the islands from the observation deck as there are no pedestrian paths or bridges connecting them.
