Published by the interdisciplinary design studio MODU, this reader explores the space between the interior and the exterior. How does the design of interior spaces align with an urban world and vice versa? Where can the boundaries between the interior and the urban be drawn? What role does the environment play in this? For their research and design projects, Phu Hoang and Rachely Rotem look at three major cities on different continents: New York, Rome, and Tokyo. MODU leaves behind the binary idea of inside and outside and rather understands architecture as an extension of the environment. Thus, it imagines a hybrid of urban space, architecture, and interior space. The book explores the different geographic locations and presents their own design projects.