The Center for Environmental Structure (CES) is an organization focused on the relationship between the built environment and natural ecosystems. It aims to promote sustainable design practices that enhance both human well-being and environmental health. CES conducts research, offers educational programs, and collaborates with various stakeholders to develop innovative solutions for environmental challenges. Founded by architect and environmentalist Christopher Alexander, CES emphasizes the importance of creating spaces that are harmonious with their surroundings. The center's work includes exploring patterns of design that foster community and ecological balance, contributing to a more sustainable future for urban and rural areas alike.