Summary The essays in this volume address the problem of three dimensions in architecture and the ways architects in the 16th century (and before and after) solved this problem during the design process. Two-dimensional drawings were used as the most helpful element in the design process, as well as for the presentation of designs. Those involved, not only patrons but also construction workers, should be able to understand what a two-dimensional design would turn out to result in three dimensions. Both drawings in two dimensions and three-dimensional models are well-known tools to architects, but the way in which they employed them together is not always clear. Sometimes architects limited themselves to the making of models only when they believed that these would suffice to communicate the design to others. In other instances, drawings and models were used jointly. Topics of study in this volume include examples of these practices in the work of the Sangallo, Raphael, Vasari, and others. TABLE OF CONTENTS Introduction Lex Bosman Drawings for Models Lex Bosman Baldassare Peruzzi's Projections Ann Huppert Combining the intrinsic and the extrinsic: Francesco di Giorgio's model drawings Elizabeth Merril ?Not as beautiful as those made by painters??: graphic innovations in carpenters' drawings in the early sixteenth century in the Low Countries Merlijn Hurx ?Accommodate the Stories to the Spaces and Not the Spaces to the Stories?. Plans, Models and Drawings for Giorgio Vasari's Decorations in the Palazzo Vecchio in Florence Laura Overpelt The Mellon Codex and the creation of space with drawings and models Lex Bosman ?Come praticarono molti?. The use of Paper Architectural Models in Early Modern Italy Giovanni Santucci