Welcome to our Legacy issue. This issue focuses on the buildings, places, books, ideas, and proposals that have left or will leave a strong mark on our urban environment. Which are the buildings and proposals that have influenced our understanding and approach to architecture? What can we learn from those that are no longer standing? How are these legacies carried forward, from the formats that are used to the validity that those legacies may have across generations? We will showcase those small and groundbreaking aspects that have left a lasting legacy in our lives. And we are not just looking at the past. We look forward, speculating about the future legacies that today’s world will generate.