LEGOs are universal world-building units and a popular gateway into architecture. Of course, you can build almost anything with them, cars, spaceships, you name it, but buildings of all kinds — from police-stations to castles — are some of the most popular subjects. What makes LEGOs so appealing to young, and not-so-young architects? What, specifically, makes them a good analogy for the design of buildings? In this episode, Stewart purchases a box of LEGOs and uses it as a springboard to talk about what he’s learned from the toy block system. From lessons on modularity and proportion, to grammar and resolution, to compositional categories of additive and subtractive, the video breaks down how these fundamental concepts apply to both LEGOs and to the history and design of architecture.