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use publishes case studies from registered practitioners who want to share their projects and experiences with others. Browse our growing database of case studies and discover initiatives making cities more inclusive, safe, resilient and sustainable. 

Case studies

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RUMBOS: Advancing Health and Economic Empowerment for Women Recyclers in Cuenca, Ecuador
Cuenca, Ecuador

RUMBOS: Advancing Health and Economic Empowerment for Women Recyclers in Cuenca, Ecuador

In Cuenca, women waste pickers keep the city's recycling system running, often at the cost of their own health. RUMBOS worked with them to change that, through research, cooperative-building and policy change.
Building Nature Into the City: the Award-Winning Approach of Paris to Urban Biodiversity
Paris, France

Building Nature Into the City: the Award-Winning Approach of Paris to Urban Biodiversity

Facing habitat loss, heat stress and limited space, Paris has managed to make biodiversity a structural element of its urban planning, by incorporating it in building regulation, green roofs and façades, in citizen-led initiatives, and in the shift towards a sponge-city model.
ecoins: Incentives, Innovation and Citizen Participation to Accelerate the Circular Economy
San José, Costa Rica

ecoins: Incentives, Innovation and Citizen Participation to Accelerate the Circular Economy

In San José, ecoins combines digital incentives, education and partnerships to make participation in the circular economy simple, accessible and connected to existing recovery systems.
Tegucigalpa: Community-based climate adaptation in informal settlements
Tegucigalpa, Honduras

Tegucigalpa: Community-based climate adaptation in informal settlements

How can informal settlements strengthen climate resilience when resources are limited and climate risks are part of everyday life? Tegucigalpa’s APCA project offers practical insights into a community-led approach.
TOO HOT: Urban Climate Action Across 13 European Cities
Frankfurt, Germany

TOO HOT: Urban Climate Action Across 13 European Cities

A comparative exhibition explores how 13 European cities respond to heat, climate risks and the transformation of urban spaces.
Graefekiez: Reclaiming Street Space, Step by Step
Berlin, Germany

Graefekiez: Reclaiming Street Space, Step by Step

Berlin’s Graefekiez is reclaiming street space step by step for safer, greener and more inclusive mobility.
Barcelona's Climate Shelters
Barcelona (ciudad), Spain

Barcelona's Climate Shelters

Barcelona has developed a citywide network of climate shelters to protect residents from extreme heat in summer and cold in winter by taking advantage of already existing public and private infrastructure.
Wiener Wäldchen: Mini Forests for Urban Climate Adaptation
Vienna, Austria

Wiener Wäldchen: Mini Forests for Urban Climate Adaptation

Vienna is planting small, dense mini forests on underused green spaces to strengthen biodiversity, support climate adaptation and bring urban nature closer to children and residents.
Dubuque, United States

Smarter Sustainable Dubuque

Smarter Sustainable Dubuque is a partnership between the City of Dubuque and IBM Research to pilot an integrated, cross-silo initiative for managing resources and reducing carbon emissions.