This chapter sets out the aims of the book and examines the three main themes of landscape, time and memory and how they relate to Norse assembly sites. The importance of the recent developments in landscape archaeology as well as earlier thing site research for the results of this study is explained. Based on this work, a new interdisciplinary research methodology, drawingon archaeological evidence, written sources and place-names, has been developed.Through this approach, the meaning and use of thingsites across the Norse world is explored. This book therefore moves beyond assembly site descriptions and analyses and also investigates the activities enacted at the assemblies, and how these were experienced by the people gathered. Other significant themes includeexplanations of chronology and the terminology used.