Urban Design: Built Environment Case Studies examines how American cities are so thinly spread out compared with many other nations. What is density and what does it mean? What are the relations between density and sustainability? This graduate seminar is intended to examine density as a most profound indicator of human settlement pattern especially in urbanized areas. One of hypotheses that the class addresses is this: Is denser the city, the greener it is or is it? Through the use of provocative readings and comparative analysis and mapping techniques, we compare major cities around the world to understand the relation between urban density and urbanism, its economic and environmental robustness: placemaking, good urban form and great streets -- all contributing to making cities great and robust ecologically, economically and socially. This course is the same as ARC 466 and course repeat rules will apply. Students should consult with their major department regarding any restrictions on their degree requirements.