The Naruto whirlpools are caused by the extreme tidal difference between the Seto Inland Sea and the Pacific Ocean.
The current speed in the Naruto Strait can reach up to 20 kilometers per hour, creating some of the largest whirlpools in the world.
The Onaruto Bridge, which the hall highlights, spans 1,629 meters in total length.
The tidal rhythm follows the lunar cycle, creating the most intense whirlpools during spring tides.
The Eddy Onaruto Bridge Memorial Hall is located within Naruto Park and provides specialized exhibits documenting the natural phenomenon of the Naruto whirlpools. It serves as an informative companion to the Uzunomichi walkway, which is situated directly beneath the Onaruto Bridge roadway. The facility explains the tidal forces and topographical conditions required to create the currents in the Naruto Strait. Visitors can view historical documents and technical models detailing the engineering of the suspension bridge connecting Shikoku to Awaji Island. The hall functions as the primary visitor center for those exploring the Naruto whirlpool area.
The observation deck overlooking the Naruto Strait provides an unobstructed view of the bridge and the swirling currents below.
Check the daily tide table on the official website before arriving, as whirlpool visibility depends entirely on the tidal schedule.
Visit the adjacent Uzunomichi walkway after the museum to view the currents through glass floor panels.
Wear comfortable walking shoes to navigate the surrounding Naruto Park terrain.
Do not visit during slack tide periods, as the whirlpools will not be visible regardless of the weather.
Closed on the second Wednesday of March, June, September, and December for facility maintenance.
