The theatre terrace of ancient Aigeira is considered to be one of the most interesting architectural ensembles of the Hellenistic period on the Peloponnese. Its exploration is one of the foci of the long-term activities of the Austrian Archaeological Institute in Aigeira. This volume edited by Walter Gauß presents both results from the earlier excavations by Wilhelm Alzinger of the 1970s and 1980s as well as recent research conducted under the direction of the editor in this area between 2011 and 2018. The contributions discuss aspects of the development and design of individual buildings, selected groups of small finds, as well as questions regarding the function of the area and its importance for the political and religious life at Aigeira.