The Crusades - Islam's Expansion and Christian Counteroffensive. Frydenlund, 2016 (with Michael Pihl). [Purchase at Saxo.com] [Frydenlund] (In Danish)

An examination of the longstanding background to the Crusades. The reasons stretch back to Islam's expansion in the Middle East, North Africa, and Eastern and Southern Europe, which put Christianity under pressure. The development of both Muslim and Christian warrior ideologies is discussed and related to the Christian counteroffensive: the Crusades. Additionally, various interpretations of the Crusades within the field of history and popular culture are addressed. The book is supported by an extensive collection of texts consisting of hundreds of excerpts from historical sources, which are freely available here (in Danish) [link]

Under the Moon – Ancient Worldviews and Religious Mentalities. Templum, 2012. [Purchase at Saxo.com] [Templum] (In Danish)

A study of the relationship between religion and science in the Greco-Roman world. Unlike the common interpretation, it is demonstrated that the ancient cosmologies were far from disenchanted but bore clear marks of religious ideas. The Greek and Roman understanding of nature and the gods, astronomy, and anthropology are explored with the aim of reaching a better understanding of the ancient human relationship with nature, science, and technology – indeed, with human life.

Via Appia. In the Footsteps of the Romans, (with H. Lyngberg) Templum 2012. [Read more] (In Danish)

The book is aimed at travelers and tourists with a special interest in Roman history and culture who wish to visit and explore areas featuring remains and sights from the Roman era. The book contains pictures, lucid maps, and detailed architectural plans, which aid the reader in understanding and experiencing the individual sights.