Uzu no Michi, Observation deck and sidewalk at Onaruto Bridge, Japan

Uzu no Michi is a 450-meter walkway set in the lower deck of the Onaruto Bridge, entered from the top of the bridge's anchorage on the Tokushima side of Oge Island. Its sides are mostly metal mesh, so wind passes through, and several floor sections are glazed. The path ends at an observation deck about 45 meters above the sea, directly over the Naruto whirlpools.

This facility opened in April 2000 and provided the first safe way to observe the natural whirlpools directly from above the water. Construction beneath the bridge created a new kind of access to a phenomenon that travelers had previously only seen from boats.

Since 2004 the observation deck has hosted "Awa Odori in Uzu no Michi", a performance of Tokushima's Awa Odori dance held on the deck itself. The facility is counted as No. 1 of the Shikoku 88 Views, described as the whirlpools seen from 45 m above the sea. The name simply means "path of whirlpools".

The entrance is at the top of the Onaruto Bridge anchorage on the Tokushima side of Omishima, about 10 minutes on foot from the Naruto Park bus stop and the Naruto Park car park. The walkway ends above the whirlpools and does not continue across the bridge to Awaji Island. Whirlpool times vary by day and are posted on the facility's website.

The glass floor sections allow a direct view into the whirlpools created by current differences between the two connected ocean areas. This immediate experience shows visitors the raw power of natural forces at work directly beneath their feet.