There is probably no more revealing route to understanding the evolution of 20th-century architecture than to examine it through the focus of the individual home. A handful of remarkable houses act as signposts to the shifting preoccupations of the century. From Charles Rennie Mackintosh's Hill House in Helensburgh to Charles and Ray Eames' own house in California, the home has been a powerfully resonant reflection of the essence of architecture. Capturing the revolutionary reinterpretation of space that characterized the beginning of the century, and the adoption of imagery of the machine age, the houses included span from Europe to North and Latin America, India, Japan and Australia.