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The first reunion dinner of the 2020 adult delegation to Thonon Les Bains.

Mercer Island Sister City Association is a nonprofit, community based organization promoting educational, cultural and other exchanges between the citizens of Thonon-les-Bains, France and Mercer Island, Washington.

The Mercer Island • Thonon-les-Bains relationship was founded in 2000 and is an association composed of individuals and organizations interested in promoting close ties between both cities. Thonon-les-Bains, France and Mercer Island, Washington are both lakeside cities located close to major metropolitan areas. Both have relatively similar sized populations with a focus on education. Both enjoy a multitude of parks, festivals, and gardens. Both are proud of their pedestrian-oriented town centers, where residents can dine, shop and relax. Both enjoy the benefits of being close to a major city with national and international events while maintaining a distinct, small town feel.

These two cities combine to form a perfect match with hopes of a long-lasting relationship and partnership. Learn More...

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2013 delegation attending cooking school in Thonon Les Bains
2020 delegation visits the centuries old salt mines in Bex, Switzerland
2019 Mercer Island student delegation
2015 Mercer Island student delegation to Thonon Les Bains
2020: Mayor Benson Wong by the Sister City plaque at Thonon Les Bains City Hall
2020 Mercer Island delegation at the Chateau de Ripaille
MISCA logo
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