This book is a collection of papers following the conference The Architecture of the Ancient Greek Theatre, held in Athens in January 2012. Fundamental publications on the topic have not been issued for many years. Bringing together the leading experts on theatre architecture, this conference aimed at introducing new facts and important comprehensive studies on Greek theatres to the public. The published volume is, first of all, a presentation of new excavation results and new analyses of individual monuments. Many well-known theatres such as the one of Dionysos in Athens, and others at Dodone, Corinth, and Sikyon have been re-examined since their original publication, with stunning results. New research, presented in this volume, includes moreover less well known, or even newly found, ancient Greek theatres in Albania, Asia Minor, Cyprus, and Sicily. Further studies on the history of research, on regional theatrical developments, terminology, and function, as well as a perspective on Roman theatres built in Greek traditions make this volume a comprehensive volume of new research for expert scholars as well as for students and the interested public.