This is the first academic book which concentrates on the discoveries of medieval date (6th- 13th centuries) from the territory of modern Poland. The book covers the principal research questions, such as the origins of the Slavs, societies of the proto-state period and the origins of the Polish state. The volume also includes a discussion of the most interesting, sometimes controversial, archaeological discoveries or issues. These include pagan Slavonic holy places, the monumental mounds of Little Poland, the first traces of medieval writing, exceptional strongholds, the origins of Polish towns, rural landscapes, archaeology of the oldest monastic complexes, and the question of locals and aliens viewed through archaeological evidence and many other topics. The book is meant mainly for students, archaeologists and historians. It can also be useful for a wider audience interested in the history and archaeology of central Europe.