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Yokohama is driving a circular and sustainable future.
News and Events
Yokohama leads Asian Circular Cities Declaration as first signatory at ASCC 2025
On November 25–26, at the Asia Smart City Conference (ASCC) 2025 in Yokohama, the establishment of the Asian Circular Cities Declaration was announced. The Circular Cities Declaration is a framework launched in Europe in 2020, with about 90 European cities...
Yokohama Leads Climate Week NYC Event on U.S.-Japan Intercity Climate Action
On September 25, 2025, the City of Yokohama led an official event during Climate Week NYC 2025 (September 21–28), one of the world’s largest climate-focused gatherings held annually in New York City. To the best of our knowledge, Yokohama became the first Japanese...
Yokohama Presents its Green City Initiatives at 5th UN Forum of Mayors
The Director of the European Office attended the Fifth United Nations Forum of Mayors, held in Geneva, Switzerland, from October 6 to 7, 2025, as a representative of Yokohama Mayor Takeharu Yamanaka. At a session discussing climate change finance mechanisms and local...
Taiwan Design Research Institute, Firms Visit Yokohama for Circular Economy
In August 2025, a delegation of about 20 members from the Taiwan Design Research Institute (TDRI), along with companies and startups working on circular economy and circular design, visited Japan to learn about leading local governments’ policies in this field. We...
Gaining inspiration from Europe for advancing Yokohama’s circular economy
On August 21, the City of Yokohama Europe Representative Office visited the ICLEI European Secretariat in Freiburg to meet with Regional Director Wolfgang Teubner and ICLEI’s Circular Economy team and discussed about ongoing European projects, exchanged ideas and...
Yokohama Mayor Meets UN Secretary-General Guterres at TICAD9 to Deepen Global Cooperation
On Thursday, August 21, Mayor of Yokohama, Japan, Takeharu Yamanaka held talks with United Nations Secretary-General António Guterres, who was visiting Yokohama to attend the 9th Tokyo International Conference on African Development (TICAD9). Mayor Yamanaka expressed...






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