The strait is historically associated with the 12th-century leader Taira no Kiyomori, who is said to have summoned the setting sun to complete the dredging of the passage in a single day.
The narrowest section of the Ondo Strait is only approximately 90 meters wide.
The park contains approximately 2,300 rhododendron plants of varying species.
The bright red color of the first Ondo Bridge was selected to contrast against the greenery and the blue waters of the strait.
The strait remains a busy shipping lane for vessels navigating the Seto Inland Sea.
Ondo-no-seto Strait Park is a coastal park located at the narrowest point of the Ondo Strait, a passage historically dredged by Taira no Kiyomori. The site is famous for its dense population of over 2,000 rhododendron bushes that bloom in vibrant shades of red and pink during late April and early May. Visitors can observe the contrasting red-painted Ondo-no-seto Bridge and the second bridge parallel to it, which serve as landmarks connecting the mainland to Kurahashijima Island. The park features elevated observation decks providing panoramic views of the strait and the heavy maritime traffic of vessels passing through the tight channel. A monument dedicated to Taira no Kiyomori commemorates the legendary local development efforts associated with the strait. The grounds include walking paths that follow the contour of the hillside, offering multiple vantage points for photography. It serves as a vital transition point between the mainland and the Seto Inland Sea islands.
The main observation deck overlooking the twin bridges and the narrowest point of the strait.
Visit during the peak rhododendron blooming season in late April to early May for the best botanical displays.
Bring binoculars if you enjoy watching the distinct variety of commercial and private ships navigating the narrow channel.
Wear comfortable walking shoes to navigate the sloping paths and stairs leading to higher viewpoints.
Avoid visiting during the height of the summer heat, as the steep paths lack significant shade.
