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Omori Nori Museum

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During the Edo Period (1600–1868), the area of Omori in Ota City was known for its cultivation of nori, the crackly sheets of seaweed most commonly wrapped around plump rice balls or sushi rolls. While development along the shores of Tokyo Bay after World War II led to the collapse of the Omori nori industry, the area’s seaweed-harvesting heritage is carefully recorded in the Omori Nori Museum.

The museum exhibits cover three floors, with an English pamphlet available to help orient non-Japanese speakers. The first floor video introduces the process of nori cultivation while large-scale dioramas – including the only remaining original noribune (nori boat) – help travelers to visualize the various steps.

On the second floor, well-curated exhibits showcase the numerous tools and clothes used in nori cultivation. Visitors can try balancing on the long stilts used to help secure the hibi, poles on which the nori would grow, into the sea floor or try on the typical clothes of a seaweed harvester.

The top floor of the museum holds a small lounge (with drink machines), with stellar views of the nearby Omori Furusato Hamabe Park from the picture windows.

Omori Nori no Furusato-kan (Seaweed Museum) offers occasional hands-on courses where you can make your own seaweed or make a traditional seaweed boat out of paper. To participate, you need to reserve in advance by phone.

The museum is open from 9:00 to 17:00 (until 19:00 from June through August) daily except for the third Monday of the month and is free for visitors.

General information

Admission Free entry
Opening Hours 9:00–17:00 (until 19:00 between July and August). Closed during the year-end and New Year's holidays (December 29 to January 3) and the third Monday of the month (or the following day if it is a national holiday).
Access

A 5-minute walk from Heiwajima Station on the Keikyu Line or Ryutsu Center Station on the Tokyo Monorail.