From detailed technical plans to impressionistic sketches that reveal experimentation and the elaboration of ideas, architects's drawings are the unseen metaphoric blueprints of the buildings they precede. Envisioning Architecture is the first in a series of three titles showcasing works from The Museum of Modern Art's architecture and design collection. It features a wide variety of drawings by great architects of the modern era, from early masters such as Frank Lloyd Wright, Le Corbusier and Ludwig Mies van der Rohe to contemporary practitioners including Frank Gehry, Zaha Hadid, Rem Koolhaas and others. Their drawings reveal the stupendous range of aesthetic approaches in architecture since the late nineteenth century and cumulatively trace the development of the field, affirming the fact that in this increasingly technological age, the age-old discipline of drawing remains vital and inventive. The book opens with an exploration of the relatively brief history of collecting architectural drawings, whose practice dates back little farther than the sixteenth century.