What is a hammer-beam roof? Where does a voissoir fit in an arch? What churches did Nicholas Hawksmoor design? Now architecture students and others interested in the history of the built environment can consult a single reference book to find the answers to these and to hundreds of other questions, quickly and in the form most easily comprehended: clear and logical drawings. There are 2000 drawings in this book covering the history of Western architecture from Egypt through Wright, Saarinen, and Fuller.