Art museums have become pervasive in contemporary cities; they are no longer limited to cosmopolitan centers alone but are spread across small- to medium-sized cities around the world. Just as the reasons for creating museums have evolved and spread, so the architectural form of museums have been just as flexible: located in former royal palaces or former industrial structures or standing as contemporary architectural icons. This chapter gives an overview of the issue by presenting three categories of the architecture of art museums, discussing within each the wide range of possibilities that yet manage to fit within these constraints. These three categories consist of existing structures converted into museums, newly created structures des...