More than half of the world population live in cities, and this number is expected to increase. Cities raise many environmental and social issues such as poor biodiversity, urban heat island effect, lack of resilience, food insecurity and many more. Our integrative solution is to build food forests in cities. A food forest is a sustainable design which mimics the ecosystem of a natural forest, with food production in mind. It started in Seattle, U.S. where people came up with the idea to build a food forest on a public lawn. We introduced the concept into Taiwan and built the first public food forest in Hsinchu where a partnership was created with the local government and community. Work parties and educational events are held to engage people in holistic learning and to share the harvest with all, including nature. Our solution has provided affordable healthy food for the community and demonstrates an ecosystem-based adaptation that can care for people and land at the same time.