My research has focused on church archaeology in Scandinavia with different perspectives on Medieval church architecture, e. g. church building and economy, vaults and economy, church architecture and demography, the fortified or multi functional churches and the crusades on the Baltic Sea, churches and symbolism, churches and centrality, deserted churches, reconstructions of churches, churches as cultural heritage and also burials with weapons.

The research has also focused on urban topography (Tønsberg), central concepts (the Middle Ages, Romanesque, Gothic, society, noblemen, Viking, Modernity, heritage, central location and central place), town, and pseudo- or alternative archaeology (the round churches of Bornholm, ley lines, sacred geometry and so called "trelleborgs") and the development of Historical archaeology as a subject since the 17th century.

In recent years I have been interested in questions concerning concepts and the use of the past, memory, memorials and monuments, canonization, heritage and World heritage and I have conducted studies on memorials of archaeological finds and excavations in Denmark and Sweden, also Early Modern memorials in the county of Visingsborg in Sweden and the movement of rune-stones, e.g. the Lundagård-stone and the Hunnestad monument, and memorials of the Reunification of Southern Jutland with Denmark in 1920. Here I also have studied the meaning of heritage on a global scale using World Heritage sites as examples in the monograph "Heritopia: World Heritage and modernity" (2021).

Latest eg from 2024 studies are initiated concerning the group of trelleborg-fortresses as an example of Viking Age "dream architecture", on the cathedrals in Lund and Dalby in Scania in the 11th Century, Christianization of Bornholm from the 10th C – and also on the concept of time using the Danish bog body of the Tollund Man as a point of departure.