International Sponge City Days

The International Sponge City Days 2026 will bring together leading experts from around the world on March 19 and 20 at the ZHAW Grüental campus in Wädenswil. The aim of the two-day event is to exchange ideas on sustainable, climate-adapted urban development - with a focus on sponge city principles. Global best-practice examples from Australia, Asia and Europe will meet local implementation experiences in Switzerland. The conference program is aimed at experts from planning, science, politics and administration as well as anyone interested in resilient cities and innovative water strategies.