Budapest-born and resident in Paris, Yona Friedman has since the mid-twentieth century pioneered the concept of 'mobile architecture', whereby town planning and housing is conceived by users, and anticipates the flux and uncertainty of future users' needs. Friedman's concentration on 'mobile architecture' - a position gaining in popularity today - has imbued his work with great social generosity, and an improving ideology. This compilation of Friedman's output offers a comprehensive overview of one of today's most influential architects and urban theorists, and includes plans, sketches, drawings, models, collages and installations.