A design manhole in Katsushika, Tokyo, where the company that manufactures Monchhichi is located. Photo by Nippon.com editorial department.
A manhole summit was held in January 2017 in the city of Kawagoe, Saitama Prefecture. Visitors were welcomed by 58 different design manholes from within the prefecture.
The front of a card is shown on the left, and the back on the right.
About 3,000 people attended Saitama Prefecture’s manhole summit in 2017.
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